./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa --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 312fc8529e2c53d6a3be2cb9c54168ebb93fc3f65452574800e27c42fdf03e19 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:00:44,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:00:44,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:00:44,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:00:44,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:00:44,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:00:44,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:00:44,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:00:44,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:00:44,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:00:44,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:00:44,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:00:44,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:00:44,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:00:44,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:00:44,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:00:44,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:00:44,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:00:44,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:00:44,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:00:44,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:00:44,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:00:44,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:00:44,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:00:44,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:00:44,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:00:44,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:00:44,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:00:44,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:00:44,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:00:44,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:00:44,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:00:44,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:00:44,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:00:44,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:00:44,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:00:44,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:00:44,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:00:44,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:00:44,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:00:44,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:00:44,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:00:44,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:00:44,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:00:44,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:00:44,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:00:44,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:00:44,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:00:44,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:00:44,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:00:44,494 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:00:44,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:00:44,494 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:00:44,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:00:44,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:00:44,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:00:44,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:00:44,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:00:44,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:00:44,496 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:00:44,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:00:44,496 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:00:44,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:00:44,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:00:44,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:00:44,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:00:44,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:00:44,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:00:44,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:00:44,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:00:44,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:00:44,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:00:44,498 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:00:44,499 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:00:44,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:00:44,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:00:44,499 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_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 312fc8529e2c53d6a3be2cb9c54168ebb93fc3f65452574800e27c42fdf03e19 [2021-12-06 21:00:44,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:00:44,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:00:44,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:00:44,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:00:44,699 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:00:44,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec7_product24.cil.c [2021-12-06 21:00:44,741 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/data/7ed7e0fa9/2e3e56341e014f05bb28df10503ce18d/FLAGdf5770dfb [2021-12-06 21:00:45,198 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:00:45,198 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/sv-benchmarks/c/product-lines/email_spec7_product24.cil.c [2021-12-06 21:00:45,212 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/data/7ed7e0fa9/2e3e56341e014f05bb28df10503ce18d/FLAGdf5770dfb [2021-12-06 21:00:45,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/data/7ed7e0fa9/2e3e56341e014f05bb28df10503ce18d [2021-12-06 21:00:45,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:00:45,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:00:45,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:00:45,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:00:45,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:00:45,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff223e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45, skipping insertion in model container [2021-12-06 21:00:45,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:00:45,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:00:45,604 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_9060effe-ac87-41aa-a0be-31d86d6653d0/sv-benchmarks/c/product-lines/email_spec7_product24.cil.c[62782,62795] [2021-12-06 21:00:45,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:00:45,615 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:00:45,688 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_9060effe-ac87-41aa-a0be-31d86d6653d0/sv-benchmarks/c/product-lines/email_spec7_product24.cil.c[62782,62795] [2021-12-06 21:00:45,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:00:45,713 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:00:45,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45 WrapperNode [2021-12-06 21:00:45,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:00:45,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:00:45,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:00:45,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:00:45,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,776 INFO L137 Inliner]: procedures = 130, calls = 206, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1042 [2021-12-06 21:00:45,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:00:45,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:00:45,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:00:45,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:00:45,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:00:45,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:00:45,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:00:45,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:00:45,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45" (1/1) ... [2021-12-06 21:00:45,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:00:45,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:45,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:00:45,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:00:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 21:00:45,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 21:00:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 21:00:45,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 21:00:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 21:00:45,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 21:00:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 21:00:45,909 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 21:00:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-06 21:00:45,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-06 21:00:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 21:00:45,909 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 21:00:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 21:00:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 21:00:45,910 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 21:00:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-06 21:00:45,910 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-06 21:00:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 21:00:45,910 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 21:00:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:00:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-06 21:00:45,910 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-06 21:00:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 21:00:45,910 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 21:00:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 21:00:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 21:00:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 21:00:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 21:00:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 21:00:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 21:00:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 21:00:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 21:00:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 21:00:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 21:00:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:00:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 21:00:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 21:00:45,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:00:45,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:00:46,057 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:00:46,059 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:00:46,482 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:00:46,499 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:00:46,499 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 21:00:46,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:00:46 BoogieIcfgContainer [2021-12-06 21:00:46,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:00:46,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:00:46,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:00:46,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:00:46,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:00:45" (1/3) ... [2021-12-06 21:00:46,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743ac42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:00:46, skipping insertion in model container [2021-12-06 21:00:46,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:45" (2/3) ... [2021-12-06 21:00:46,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743ac42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:00:46, skipping insertion in model container [2021-12-06 21:00:46,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:00:46" (3/3) ... [2021-12-06 21:00:46,508 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product24.cil.c [2021-12-06 21:00:46,514 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:00:46,514 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:00:46,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:00:46,569 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 [2021-12-06 21:00:46,569 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:00:46,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-06 21:00:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 21:00:46,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:46,611 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:46,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash 218059154, now seen corresponding path program 1 times [2021-12-06 21:00:46,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:46,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363482489] [2021-12-06 21:00:46,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:46,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:00:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:00:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:00:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:00:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 21:00:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:00:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:00:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 21:00:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 21:00:46,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:46,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363482489] [2021-12-06 21:00:46,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363482489] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:46,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813530947] [2021-12-06 21:00:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:46,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:46,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:46,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:46,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:00:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 21:00:47,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 21:00:47,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:47,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813530947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:47,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:47,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-06 21:00:47,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593158547] [2021-12-06 21:00:47,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:47,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 21:00:47,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:47,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 21:00:47,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:00:47,363 INFO L87 Difference]: Start difference. First operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:00:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:47,418 INFO L93 Difference]: Finished difference Result 481 states and 712 transitions. [2021-12-06 21:00:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 21:00:47,419 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 86 [2021-12-06 21:00:47,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:47,429 INFO L225 Difference]: With dead ends: 481 [2021-12-06 21:00:47,429 INFO L226 Difference]: Without dead ends: 313 [2021-12-06 21:00:47,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:00:47,437 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:47,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:00:47,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-06 21:00:47,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-12-06 21:00:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 249 states have (on average 1.5261044176706828) internal successors, (380), 250 states have internal predecessors, (380), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-06 21:00:47,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 471 transitions. [2021-12-06 21:00:47,487 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 471 transitions. Word has length 86 [2021-12-06 21:00:47,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:47,488 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 471 transitions. [2021-12-06 21:00:47,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:00:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 471 transitions. [2021-12-06 21:00:47,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 21:00:47,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:47,493 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:47,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:00:47,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 21:00:47,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:47,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2127214917, now seen corresponding path program 1 times [2021-12-06 21:00:47,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:47,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299323402] [2021-12-06 21:00:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:47,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:00:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:00:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:00:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 21:00:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 21:00:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 21:00:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 21:00:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 21:00:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 21:00:47,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:47,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299323402] [2021-12-06 21:00:47,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299323402] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:47,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750028074] [2021-12-06 21:00:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:47,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:47,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:47,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:47,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:00:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:47,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 21:00:47,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 21:00:48,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:48,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750028074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:48,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:48,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 21:00:48,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716057575] [2021-12-06 21:00:48,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:48,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:00:48,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:48,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:00:48,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:00:48,090 INFO L87 Difference]: Start difference. First operand 313 states and 471 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:00:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:48,125 INFO L93 Difference]: Finished difference Result 471 states and 693 transitions. [2021-12-06 21:00:48,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:00:48,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2021-12-06 21:00:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:48,129 INFO L225 Difference]: With dead ends: 471 [2021-12-06 21:00:48,129 INFO L226 Difference]: Without dead ends: 316 [2021-12-06 21:00:48,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:00:48,131 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 1 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 936 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 [2021-12-06 21:00:48,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 936 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:00:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-06 21:00:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-12-06 21:00:48,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 252 states have internal predecessors, (382), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-06 21:00:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 473 transitions. [2021-12-06 21:00:48,152 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 473 transitions. Word has length 87 [2021-12-06 21:00:48,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:48,152 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 473 transitions. [2021-12-06 21:00:48,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:00:48,153 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 473 transitions. [2021-12-06 21:00:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 21:00:48,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:48,157 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:48,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 21:00:48,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:48,359 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:48,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1198059665, now seen corresponding path program 1 times [2021-12-06 21:00:48,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:48,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720467674] [2021-12-06 21:00:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:48,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:00:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:00:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:00:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 21:00:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:00:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:00:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 21:00:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 21:00:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 21:00:48,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:48,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720467674] [2021-12-06 21:00:48,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720467674] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:48,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885550947] [2021-12-06 21:00:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:48,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:48,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:48,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:48,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 21:00:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:00:48,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 21:00:48,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:48,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885550947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:48,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:48,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 21:00:48,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952480760] [2021-12-06 21:00:48,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:48,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:00:48,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:00:48,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:00:48,848 INFO L87 Difference]: Start difference. First operand 315 states and 473 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:00:48,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:48,870 INFO L93 Difference]: Finished difference Result 665 states and 1013 transitions. [2021-12-06 21:00:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:00:48,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2021-12-06 21:00:48,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:48,874 INFO L225 Difference]: With dead ends: 665 [2021-12-06 21:00:48,874 INFO L226 Difference]: Without dead ends: 377 [2021-12-06 21:00:48,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:00:48,876 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 115 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:48,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 912 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:00:48,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-12-06 21:00:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2021-12-06 21:00:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 294 states have (on average 1.5374149659863945) internal successors, (452), 295 states have internal predecessors, (452), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-12-06 21:00:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 565 transitions. [2021-12-06 21:00:48,897 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 565 transitions. Word has length 96 [2021-12-06 21:00:48,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:48,898 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 565 transitions. [2021-12-06 21:00:48,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:00:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 565 transitions. [2021-12-06 21:00:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 21:00:48,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:48,902 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:48,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 21:00:49,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 21:00:49,104 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:49,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:49,106 INFO L85 PathProgramCache]: Analyzing trace with hash -230669554, now seen corresponding path program 1 times [2021-12-06 21:00:49,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:49,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698421948] [2021-12-06 21:00:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:49,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:00:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:00:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:00:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 21:00:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 21:00:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 21:00:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 21:00:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 21:00:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 21:00:49,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:49,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698421948] [2021-12-06 21:00:49,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698421948] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:49,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689598217] [2021-12-06 21:00:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:49,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:49,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:49,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:49,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 21:00:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:49,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:00:49,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 21:00:49,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:49,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689598217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:49,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:49,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 21:00:49,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751841752] [2021-12-06 21:00:49,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:49,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:00:49,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:49,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:00:49,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:00:49,583 INFO L87 Difference]: Start difference. First operand 369 states and 565 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:00:49,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:49,635 INFO L93 Difference]: Finished difference Result 729 states and 1120 transitions. [2021-12-06 21:00:49,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:00:49,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2021-12-06 21:00:49,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:49,639 INFO L225 Difference]: With dead ends: 729 [2021-12-06 21:00:49,639 INFO L226 Difference]: Without dead ends: 371 [2021-12-06 21:00:49,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:00:49,643 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 133 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:49,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1696 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:00:49,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-06 21:00:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-12-06 21:00:49,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 295 states have (on average 1.535593220338983) internal successors, (453), 297 states have internal predecessors, (453), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2021-12-06 21:00:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 568 transitions. [2021-12-06 21:00:49,666 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 568 transitions. Word has length 97 [2021-12-06 21:00:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:49,666 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 568 transitions. [2021-12-06 21:00:49,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:00:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 568 transitions. [2021-12-06 21:00:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 21:00:49,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:49,669 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:49,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 21:00:49,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:49,870 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:49,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1822377547, now seen corresponding path program 1 times [2021-12-06 21:00:49,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:49,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932462509] [2021-12-06 21:00:49,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:49,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:00:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 21:00:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 21:00:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 21:00:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 21:00:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 21:00:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:00:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:00:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 21:00:50,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:50,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932462509] [2021-12-06 21:00:50,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932462509] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:50,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169111505] [2021-12-06 21:00:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:50,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:50,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:50,121 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:50,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 21:00:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 21:00:50,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 21:00:50,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:50,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169111505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:50,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:50,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 21:00:50,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991125972] [2021-12-06 21:00:50,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:50,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:00:50,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:50,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:00:50,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:00:50,359 INFO L87 Difference]: Start difference. First operand 371 states and 568 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:00:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:50,421 INFO L93 Difference]: Finished difference Result 731 states and 1125 transitions. [2021-12-06 21:00:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:00:50,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2021-12-06 21:00:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:50,424 INFO L225 Difference]: With dead ends: 731 [2021-12-06 21:00:50,424 INFO L226 Difference]: Without dead ends: 373 [2021-12-06 21:00:50,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-06 21:00:50,425 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 132 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:50,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1685 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:00:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-06 21:00:50,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-12-06 21:00:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2021-12-06 21:00:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 574 transitions. [2021-12-06 21:00:50,443 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 574 transitions. Word has length 98 [2021-12-06 21:00:50,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:50,443 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 574 transitions. [2021-12-06 21:00:50,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:00:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 574 transitions. [2021-12-06 21:00:50,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 21:00:50,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:50,445 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:50,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 21:00:50,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:50,646 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash -474056156, now seen corresponding path program 1 times [2021-12-06 21:00:50,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:50,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946802665] [2021-12-06 21:00:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:50,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:00:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:00:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 21:00:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 21:00:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 21:00:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 21:00:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 21:00:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:00:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 21:00:50,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:50,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946802665] [2021-12-06 21:00:50,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946802665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:50,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:00:50,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:00:50,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996074385] [2021-12-06 21:00:50,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:50,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:00:50,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:50,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:00:50,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:00:50,735 INFO L87 Difference]: Start difference. First operand 373 states and 574 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:00:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:51,905 INFO L93 Difference]: Finished difference Result 908 states and 1409 transitions. [2021-12-06 21:00:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:00:51,906 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2021-12-06 21:00:51,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:51,911 INFO L225 Difference]: With dead ends: 908 [2021-12-06 21:00:51,911 INFO L226 Difference]: Without dead ends: 558 [2021-12-06 21:00:51,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:00:51,914 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1173 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:51,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 1688 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:00:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-12-06 21:00:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 373. [2021-12-06 21:00:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2021-12-06 21:00:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 573 transitions. [2021-12-06 21:00:51,961 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 573 transitions. Word has length 99 [2021-12-06 21:00:51,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:51,961 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 573 transitions. [2021-12-06 21:00:51,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:00:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 573 transitions. [2021-12-06 21:00:51,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 21:00:51,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:51,964 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:51,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:00:51,964 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:51,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:51,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1941909695, now seen corresponding path program 2 times [2021-12-06 21:00:51,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:51,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013352911] [2021-12-06 21:00:51,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:51,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:00:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:00:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:00:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 21:00:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 21:00:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 21:00:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 21:00:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 21:00:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 21:00:52,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:52,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013352911] [2021-12-06 21:00:52,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013352911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:52,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:00:52,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:00:52,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659128738] [2021-12-06 21:00:52,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:52,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:00:52,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:52,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:00:52,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:00:52,061 INFO L87 Difference]: Start difference. First operand 373 states and 573 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:00:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:53,176 INFO L93 Difference]: Finished difference Result 910 states and 1412 transitions. [2021-12-06 21:00:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:00:53,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2021-12-06 21:00:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:53,180 INFO L225 Difference]: With dead ends: 910 [2021-12-06 21:00:53,180 INFO L226 Difference]: Without dead ends: 560 [2021-12-06 21:00:53,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:00:53,182 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1158 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:53,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 1695 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:00:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-12-06 21:00:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2021-12-06 21:00:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2021-12-06 21:00:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2021-12-06 21:00:53,204 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 100 [2021-12-06 21:00:53,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:53,204 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2021-12-06 21:00:53,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:00:53,204 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2021-12-06 21:00:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 21:00:53,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:53,206 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:53,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 21:00:53,206 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:53,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:53,206 INFO L85 PathProgramCache]: Analyzing trace with hash 68261259, now seen corresponding path program 1 times [2021-12-06 21:00:53,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:53,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305711378] [2021-12-06 21:00:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:53,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:00:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:00:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:00:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:00:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:00:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:00:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:00:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 21:00:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:53,297 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 21:00:53,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:53,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305711378] [2021-12-06 21:00:53,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305711378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:53,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:00:53,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:00:53,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795879531] [2021-12-06 21:00:53,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:53,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:00:53,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:53,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:00:53,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:00:53,299 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:00:54,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:54,315 INFO L93 Difference]: Finished difference Result 910 states and 1411 transitions. [2021-12-06 21:00:54,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:00:54,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2021-12-06 21:00:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:54,318 INFO L225 Difference]: With dead ends: 910 [2021-12-06 21:00:54,318 INFO L226 Difference]: Without dead ends: 560 [2021-12-06 21:00:54,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:00:54,320 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1166 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:54,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 1703 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:00:54,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-12-06 21:00:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2021-12-06 21:00:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2021-12-06 21:00:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2021-12-06 21:00:54,340 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 101 [2021-12-06 21:00:54,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:54,340 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2021-12-06 21:00:54,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 21:00:54,341 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2021-12-06 21:00:54,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 21:00:54,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:54,342 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:54,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 21:00:54,342 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:54,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:54,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1754441097, now seen corresponding path program 1 times [2021-12-06 21:00:54,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:54,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213452404] [2021-12-06 21:00:54,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:54,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:00:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:00:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:00:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:00:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:00:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:00:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:00:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 21:00:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 21:00:54,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:54,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213452404] [2021-12-06 21:00:54,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213452404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:54,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:00:54,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 21:00:54,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963103332] [2021-12-06 21:00:54,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:54,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 21:00:54,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:54,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 21:00:54,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:00:54,451 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 21:00:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:55,745 INFO L93 Difference]: Finished difference Result 908 states and 1406 transitions. [2021-12-06 21:00:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:00:55,746 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 101 [2021-12-06 21:00:55,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:55,749 INFO L225 Difference]: With dead ends: 908 [2021-12-06 21:00:55,749 INFO L226 Difference]: Without dead ends: 560 [2021-12-06 21:00:55,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 21:00:55,751 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1272 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 3397 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 3851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 3397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:55,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1272 Valid, 2203 Invalid, 3851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 3397 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 21:00:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-12-06 21:00:55,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2021-12-06 21:00:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2021-12-06 21:00:55,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 575 transitions. [2021-12-06 21:00:55,772 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 575 transitions. Word has length 101 [2021-12-06 21:00:55,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:55,772 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 575 transitions. [2021-12-06 21:00:55,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 21:00:55,772 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 575 transitions. [2021-12-06 21:00:55,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 21:00:55,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:55,774 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:55,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:00:55,774 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:55,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:55,774 INFO L85 PathProgramCache]: Analyzing trace with hash -5179092, now seen corresponding path program 2 times [2021-12-06 21:00:55,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:55,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82921159] [2021-12-06 21:00:55,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:55,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:00:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:00:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:00:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 21:00:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 21:00:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 21:00:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 21:00:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 21:00:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 21:00:55,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:55,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82921159] [2021-12-06 21:00:55,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82921159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:55,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:00:55,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 21:00:55,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420812011] [2021-12-06 21:00:55,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:55,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 21:00:55,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:55,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 21:00:55,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:00:55,878 INFO L87 Difference]: Start difference. First operand 375 states and 575 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 21:00:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:57,200 INFO L93 Difference]: Finished difference Result 910 states and 1412 transitions. [2021-12-06 21:00:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:00:57,200 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 102 [2021-12-06 21:00:57,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:57,204 INFO L225 Difference]: With dead ends: 910 [2021-12-06 21:00:57,204 INFO L226 Difference]: Without dead ends: 562 [2021-12-06 21:00:57,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 21:00:57,205 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 1282 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3392 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 3853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 3392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:57,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1282 Valid, 2187 Invalid, 3853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 3392 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 21:00:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-12-06 21:00:57,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 377. [2021-12-06 21:00:57,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 298 states have (on average 1.5302013422818792) internal successors, (456), 303 states have internal predecessors, (456), 57 states have call successors, (57), 17 states have call predecessors, (57), 21 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2021-12-06 21:00:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 581 transitions. [2021-12-06 21:00:57,226 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 581 transitions. Word has length 102 [2021-12-06 21:00:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:57,226 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 581 transitions. [2021-12-06 21:00:57,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 21:00:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 581 transitions. [2021-12-06 21:00:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 21:00:57,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:57,228 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:57,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 21:00:57,228 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1612047954, now seen corresponding path program 1 times [2021-12-06 21:00:57,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:57,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351632561] [2021-12-06 21:00:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:57,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:00:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:00:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:00:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 21:00:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 21:00:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 21:00:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 21:00:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:00:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 21:00:57,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:57,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351632561] [2021-12-06 21:00:57,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351632561] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:57,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589669490] [2021-12-06 21:00:57,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:57,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:57,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:57,329 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:57,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 21:00:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:00:57,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:00:57,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:00:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:00:57,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589669490] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:00:57,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:00:57,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-06 21:00:57,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065830416] [2021-12-06 21:00:57,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:00:57,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 21:00:57,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:57,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 21:00:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:00:57,686 INFO L87 Difference]: Start difference. First operand 377 states and 581 transitions. Second operand has 15 states, 14 states have (on average 8.285714285714286) internal successors, (116), 11 states have internal predecessors, (116), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 21:00:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:00:59,561 INFO L93 Difference]: Finished difference Result 1639 states and 2720 transitions. [2021-12-06 21:00:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 21:00:59,561 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.285714285714286) internal successors, (116), 11 states have internal predecessors, (116), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 103 [2021-12-06 21:00:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:00:59,569 INFO L225 Difference]: With dead ends: 1639 [2021-12-06 21:00:59,569 INFO L226 Difference]: Without dead ends: 1293 [2021-12-06 21:00:59,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-06 21:00:59,572 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 3613 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 4707 mSolverCounterSat, 1298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3615 SdHoareTripleChecker+Valid, 3362 SdHoareTripleChecker+Invalid, 6005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1298 IncrementalHoareTripleChecker+Valid, 4707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:00:59,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3615 Valid, 3362 Invalid, 6005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1298 Valid, 4707 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 21:00:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2021-12-06 21:00:59,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 730. [2021-12-06 21:00:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 587 states have (on average 1.5792163543441227) internal successors, (927), 592 states have internal predecessors, (927), 121 states have call successors, (121), 17 states have call predecessors, (121), 21 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2021-12-06 21:00:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1190 transitions. [2021-12-06 21:00:59,619 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1190 transitions. Word has length 103 [2021-12-06 21:00:59,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:00:59,619 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 1190 transitions. [2021-12-06 21:00:59,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.285714285714286) internal successors, (116), 11 states have internal predecessors, (116), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 21:00:59,620 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1190 transitions. [2021-12-06 21:00:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 21:00:59,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:00:59,622 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:59,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 21:00:59,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9060effe-ac87-41aa-a0be-31d86d6653d0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 21:00:59,823 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:00:59,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1233260648, now seen corresponding path program 1 times [2021-12-06 21:00:59,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:59,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2464717] [2021-12-06 21:00:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:59,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:00:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:00:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:00:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:00:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:00:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:00:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:00:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:00:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 21:00:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 21:00:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:00:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:00:59,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:59,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2464717] [2021-12-06 21:00:59,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2464717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:59,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:00:59,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:00:59,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477391686] [2021-12-06 21:00:59,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:59,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:00:59,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:59,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:00:59,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:00:59,894 INFO L87 Difference]: Start difference. First operand 730 states and 1190 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:00,680 INFO L93 Difference]: Finished difference Result 1900 states and 3163 transitions. [2021-12-06 21:01:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:01:00,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2021-12-06 21:01:00,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:00,687 INFO L225 Difference]: With dead ends: 1900 [2021-12-06 21:01:00,687 INFO L226 Difference]: Without dead ends: 1248 [2021-12-06 21:01:00,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:01:00,689 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 1168 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:00,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 1451 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:01:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-12-06 21:01:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1055. [2021-12-06 21:01:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 848 states have (on average 1.5943396226415094) internal successors, (1352), 853 states have internal predecessors, (1352), 185 states have call successors, (185), 17 states have call predecessors, (185), 21 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2021-12-06 21:01:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1753 transitions. [2021-12-06 21:01:00,746 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1753 transitions. Word has length 106 [2021-12-06 21:01:00,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:00,746 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 1753 transitions. [2021-12-06 21:01:00,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:00,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1753 transitions. [2021-12-06 21:01:00,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 21:01:00,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:00,750 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:00,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 21:01:00,750 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:00,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:00,751 INFO L85 PathProgramCache]: Analyzing trace with hash 861540850, now seen corresponding path program 1 times [2021-12-06 21:01:00,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:00,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100241409] [2021-12-06 21:01:00,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:00,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:01:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:01:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:01:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:01:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:01:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:01:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 21:01:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:01:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:01:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 21:01:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 21:01:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:01:00,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:00,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100241409] [2021-12-06 21:01:00,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100241409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:00,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:00,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:01:00,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530584230] [2021-12-06 21:01:00,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:00,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:01:00,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:00,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:01:00,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:01:00,818 INFO L87 Difference]: Start difference. First operand 1055 states and 1753 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:01,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:01,665 INFO L93 Difference]: Finished difference Result 2705 states and 4547 transitions. [2021-12-06 21:01:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:01:01,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2021-12-06 21:01:01,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:01,674 INFO L225 Difference]: With dead ends: 2705 [2021-12-06 21:01:01,674 INFO L226 Difference]: Without dead ends: 1781 [2021-12-06 21:01:01,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:01:01,677 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 1153 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:01,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 1395 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:01:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2021-12-06 21:01:01,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1588. [2021-12-06 21:01:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1286 states have (on average 1.6003110419906688) internal successors, (2058), 1291 states have internal predecessors, (2058), 280 states have call successors, (280), 17 states have call predecessors, (280), 21 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2021-12-06 21:01:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2649 transitions. [2021-12-06 21:01:01,764 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2649 transitions. Word has length 107 [2021-12-06 21:01:01,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:01,764 INFO L470 AbstractCegarLoop]: Abstraction has 1588 states and 2649 transitions. [2021-12-06 21:01:01,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:01,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2649 transitions. [2021-12-06 21:01:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 21:01:01,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:01,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:01,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 21:01:01,770 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:01,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash 985171018, now seen corresponding path program 1 times [2021-12-06 21:01:01,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:01,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598490604] [2021-12-06 21:01:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:01,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:01:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:01:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:01:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:01:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:01:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:01:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 21:01:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 21:01:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 21:01:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 21:01:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:01:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:01:01,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:01,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598490604] [2021-12-06 21:01:01,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598490604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:01,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:01,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:01:01,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61147227] [2021-12-06 21:01:01,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:01,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:01:01,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:01,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:01:01,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:01:01,848 INFO L87 Difference]: Start difference. First operand 1588 states and 2649 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:02,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:02,680 INFO L93 Difference]: Finished difference Result 3912 states and 6633 transitions. [2021-12-06 21:01:02,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:01:02,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2021-12-06 21:01:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:02,697 INFO L225 Difference]: With dead ends: 3912 [2021-12-06 21:01:02,698 INFO L226 Difference]: Without dead ends: 2590 [2021-12-06 21:01:02,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:01:02,703 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 1169 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:02,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1184 Valid, 1379 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:01:02,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-12-06 21:01:02,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2397. [2021-12-06 21:01:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 1972 states have (on average 1.604969574036511) internal successors, (3165), 1977 states have internal predecessors, (3165), 403 states have call successors, (403), 17 states have call predecessors, (403), 21 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2021-12-06 21:01:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 4018 transitions. [2021-12-06 21:01:02,831 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 4018 transitions. Word has length 108 [2021-12-06 21:01:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:02,831 INFO L470 AbstractCegarLoop]: Abstraction has 2397 states and 4018 transitions. [2021-12-06 21:01:02,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 4018 transitions. [2021-12-06 21:01:02,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 21:01:02,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:02,836 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:02,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 21:01:02,837 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:02,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:02,837 INFO L85 PathProgramCache]: Analyzing trace with hash 457694449, now seen corresponding path program 1 times [2021-12-06 21:01:02,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:02,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961375] [2021-12-06 21:01:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:02,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:01:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:01:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:01:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:01:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:01:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:01:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 21:01:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:01:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 21:01:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:01:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:01:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:01:02,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:02,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961375] [2021-12-06 21:01:02,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:02,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:02,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:01:02,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702090348] [2021-12-06 21:01:02,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:02,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:01:02,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:02,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:01:02,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:01:02,909 INFO L87 Difference]: Start difference. First operand 2397 states and 4018 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:03,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:03,828 INFO L93 Difference]: Finished difference Result 5796 states and 9893 transitions. [2021-12-06 21:01:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:01:03,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2021-12-06 21:01:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:03,848 INFO L225 Difference]: With dead ends: 5796 [2021-12-06 21:01:03,848 INFO L226 Difference]: Without dead ends: 3884 [2021-12-06 21:01:03,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:01:03,853 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 1139 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:03,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 1406 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:01:03,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2021-12-06 21:01:04,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3691. [2021-12-06 21:01:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 3087 states have (on average 1.6077097505668934) internal successors, (4963), 3092 states have internal predecessors, (4963), 582 states have call successors, (582), 17 states have call predecessors, (582), 21 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2021-12-06 21:01:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 6200 transitions. [2021-12-06 21:01:04,054 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 6200 transitions. Word has length 109 [2021-12-06 21:01:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:04,054 INFO L470 AbstractCegarLoop]: Abstraction has 3691 states and 6200 transitions. [2021-12-06 21:01:04,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 6200 transitions. [2021-12-06 21:01:04,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 21:01:04,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:04,059 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:04,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 21:01:04,059 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:04,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:04,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1689913714, now seen corresponding path program 1 times [2021-12-06 21:01:04,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:04,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342977584] [2021-12-06 21:01:04,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:04,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:01:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:01:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:01:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:01:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:01:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:01:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 21:01:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:01:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:01:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:01:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:01:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:01:04,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:04,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342977584] [2021-12-06 21:01:04,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342977584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:04,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:04,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:01:04,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059105444] [2021-12-06 21:01:04,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:04,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:01:04,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:01:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:01:04,155 INFO L87 Difference]: Start difference. First operand 3691 states and 6200 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:05,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:05,142 INFO L93 Difference]: Finished difference Result 8899 states and 15257 transitions. [2021-12-06 21:01:05,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:01:05,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2021-12-06 21:01:05,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:05,172 INFO L225 Difference]: With dead ends: 8899 [2021-12-06 21:01:05,172 INFO L226 Difference]: Without dead ends: 6025 [2021-12-06 21:01:05,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:01:05,180 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 1157 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:05,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 1427 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:01:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6025 states. [2021-12-06 21:01:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6025 to 5832. [2021-12-06 21:01:05,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 4852 states have (on average 1.6011953833470733) internal successors, (7769), 4857 states have internal predecessors, (7769), 958 states have call successors, (958), 17 states have call predecessors, (958), 21 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2021-12-06 21:01:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 9802 transitions. [2021-12-06 21:01:05,524 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 9802 transitions. Word has length 110 [2021-12-06 21:01:05,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:05,524 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 9802 transitions. [2021-12-06 21:01:05,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 9802 transitions. [2021-12-06 21:01:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 21:01:05,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:05,530 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:05,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 21:01:05,530 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:05,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1581943123, now seen corresponding path program 1 times [2021-12-06 21:01:05,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:05,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355861338] [2021-12-06 21:01:05,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:05,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:01:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:01:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:01:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:01:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:01:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:01:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:01:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:01:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:01:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:01:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 21:01:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:01:05,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:05,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355861338] [2021-12-06 21:01:05,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355861338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:05,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:05,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:01:05,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866828395] [2021-12-06 21:01:05,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:05,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:01:05,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:05,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:01:05,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:01:05,599 INFO L87 Difference]: Start difference. First operand 5832 states and 9802 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:06,799 INFO L93 Difference]: Finished difference Result 14516 states and 24870 transitions. [2021-12-06 21:01:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:01:06,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2021-12-06 21:01:06,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:06,847 INFO L225 Difference]: With dead ends: 14516 [2021-12-06 21:01:06,847 INFO L226 Difference]: Without dead ends: 9903 [2021-12-06 21:01:06,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:01:06,860 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 1158 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:06,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 1391 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:01:06,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9903 states. [2021-12-06 21:01:07,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9903 to 9710. [2021-12-06 21:01:07,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9710 states, 8124 states have (on average 1.5987198424421467) internal successors, (12988), 8129 states have internal predecessors, (12988), 1564 states have call successors, (1564), 17 states have call predecessors, (1564), 21 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2021-12-06 21:01:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9710 states to 9710 states and 16311 transitions. [2021-12-06 21:01:07,385 INFO L78 Accepts]: Start accepts. Automaton has 9710 states and 16311 transitions. Word has length 111 [2021-12-06 21:01:07,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:07,386 INFO L470 AbstractCegarLoop]: Abstraction has 9710 states and 16311 transitions. [2021-12-06 21:01:07,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand 9710 states and 16311 transitions. [2021-12-06 21:01:07,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 21:01:07,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:07,393 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:07,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 21:01:07,393 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:07,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:07,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1872835360, now seen corresponding path program 1 times [2021-12-06 21:01:07,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:07,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996149893] [2021-12-06 21:01:07,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:07,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:01:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:01:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:01:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:01:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:01:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:01:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:01:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 21:01:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 21:01:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:01:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:01:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:01:07,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996149893] [2021-12-06 21:01:07,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996149893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:07,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:07,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:01:07,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467746255] [2021-12-06 21:01:07,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:07,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:01:07,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:07,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:01:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:01:07,463 INFO L87 Difference]: Start difference. First operand 9710 states and 16311 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:09,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:09,000 INFO L93 Difference]: Finished difference Result 25225 states and 43151 transitions. [2021-12-06 21:01:09,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:01:09,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2021-12-06 21:01:09,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:09,054 INFO L225 Difference]: With dead ends: 25225 [2021-12-06 21:01:09,054 INFO L226 Difference]: Without dead ends: 17216 [2021-12-06 21:01:09,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:01:09,075 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 1152 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:09,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 1427 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:01:09,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17216 states. [2021-12-06 21:01:09,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17216 to 17023. [2021-12-06 21:01:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17023 states, 14234 states have (on average 1.590136293382043) internal successors, (22634), 14239 states have internal predecessors, (22634), 2767 states have call successors, (2767), 17 states have call predecessors, (2767), 21 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2021-12-06 21:01:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17023 states to 17023 states and 28507 transitions. [2021-12-06 21:01:10,013 INFO L78 Accepts]: Start accepts. Automaton has 17023 states and 28507 transitions. Word has length 112 [2021-12-06 21:01:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:10,014 INFO L470 AbstractCegarLoop]: Abstraction has 17023 states and 28507 transitions. [2021-12-06 21:01:10,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 17023 states and 28507 transitions. [2021-12-06 21:01:10,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 21:01:10,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:10,023 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:10,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 21:01:10,023 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:10,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:10,024 INFO L85 PathProgramCache]: Analyzing trace with hash -58354548, now seen corresponding path program 1 times [2021-12-06 21:01:10,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:10,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964313538] [2021-12-06 21:01:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:10,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:01:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:01:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:01:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:01:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:01:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:01:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 21:01:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 21:01:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 21:01:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 21:01:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 21:01:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:01:10,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:10,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964313538] [2021-12-06 21:01:10,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964313538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:10,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:10,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:01:10,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771828707] [2021-12-06 21:01:10,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:10,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:01:10,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:10,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:01:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:01:10,086 INFO L87 Difference]: Start difference. First operand 17023 states and 28507 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:12,093 INFO L93 Difference]: Finished difference Result 45201 states and 77164 transitions. [2021-12-06 21:01:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:01:12,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2021-12-06 21:01:12,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:12,184 INFO L225 Difference]: With dead ends: 45201 [2021-12-06 21:01:12,184 INFO L226 Difference]: Without dead ends: 30556 [2021-12-06 21:01:12,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:01:12,216 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 1157 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:12,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 1392 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:01:12,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30556 states. [2021-12-06 21:01:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30556 to 30363. [2021-12-06 21:01:13,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30363 states, 25535 states have (on average 1.5859408654787546) internal successors, (40497), 25540 states have internal predecessors, (40497), 4806 states have call successors, (4806), 17 states have call predecessors, (4806), 21 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2021-12-06 21:01:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30363 states to 30363 states and 50722 transitions. [2021-12-06 21:01:13,858 INFO L78 Accepts]: Start accepts. Automaton has 30363 states and 50722 transitions. Word has length 113 [2021-12-06 21:01:13,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:13,859 INFO L470 AbstractCegarLoop]: Abstraction has 30363 states and 50722 transitions. [2021-12-06 21:01:13,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 30363 states and 50722 transitions. [2021-12-06 21:01:13,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 21:01:13,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:13,870 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:13,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 21:01:13,870 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:13,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:13,870 INFO L85 PathProgramCache]: Analyzing trace with hash 57379902, now seen corresponding path program 1 times [2021-12-06 21:01:13,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:13,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995522191] [2021-12-06 21:01:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:13,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:01:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:01:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:01:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:01:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:01:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:01:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:01:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 21:01:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 21:01:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:01:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 21:01:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:01:13,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:13,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995522191] [2021-12-06 21:01:13,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995522191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:13,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:13,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:01:13,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40054815] [2021-12-06 21:01:13,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:13,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:01:13,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:13,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:01:13,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:01:13,938 INFO L87 Difference]: Start difference. First operand 30363 states and 50722 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:17,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:17,119 INFO L93 Difference]: Finished difference Result 82938 states and 140688 transitions. [2021-12-06 21:01:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:01:17,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2021-12-06 21:01:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:17,267 INFO L225 Difference]: With dead ends: 82938 [2021-12-06 21:01:17,267 INFO L226 Difference]: Without dead ends: 55765 [2021-12-06 21:01:17,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:01:17,315 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1139 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:17,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 1391 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:01:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55765 states. [2021-12-06 21:01:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55765 to 55572. [2021-12-06 21:01:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55572 states, 47029 states have (on average 1.5804716238916414) internal successors, (74328), 47034 states have internal predecessors, (74328), 8521 states have call successors, (8521), 17 states have call predecessors, (8521), 21 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2021-12-06 21:01:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55572 states to 55572 states and 92515 transitions. [2021-12-06 21:01:20,211 INFO L78 Accepts]: Start accepts. Automaton has 55572 states and 92515 transitions. Word has length 114 [2021-12-06 21:01:20,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:20,212 INFO L470 AbstractCegarLoop]: Abstraction has 55572 states and 92515 transitions. [2021-12-06 21:01:20,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 55572 states and 92515 transitions. [2021-12-06 21:01:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 21:01:20,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:20,227 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:20,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 21:01:20,227 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:20,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:20,228 INFO L85 PathProgramCache]: Analyzing trace with hash 160442476, now seen corresponding path program 1 times [2021-12-06 21:01:20,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:20,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188521865] [2021-12-06 21:01:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:20,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:01:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:01:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:01:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:01:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:01:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:01:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:01:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 21:01:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:01:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:01:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:01:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:01:20,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:20,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188521865] [2021-12-06 21:01:20,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188521865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:20,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:20,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:01:20,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556858306] [2021-12-06 21:01:20,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:20,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:01:20,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:20,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:01:20,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:01:20,296 INFO L87 Difference]: Start difference. First operand 55572 states and 92515 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:25,179 INFO L93 Difference]: Finished difference Result 103994 states and 176674 transitions. [2021-12-06 21:01:25,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:01:25,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2021-12-06 21:01:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:25,474 INFO L225 Difference]: With dead ends: 103994 [2021-12-06 21:01:25,475 INFO L226 Difference]: Without dead ends: 103839 [2021-12-06 21:01:25,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:01:25,597 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 1157 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:25,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 1377 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:01:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103839 states. [2021-12-06 21:01:30,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103839 to 103646. [2021-12-06 21:01:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103646 states, 88304 states have (on average 1.5736433230657727) internal successors, (138959), 88309 states have internal predecessors, (138959), 15320 states have call successors, (15320), 17 states have call predecessors, (15320), 21 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2021-12-06 21:01:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103646 states to 103646 states and 171790 transitions. [2021-12-06 21:01:31,318 INFO L78 Accepts]: Start accepts. Automaton has 103646 states and 171790 transitions. Word has length 115 [2021-12-06 21:01:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:31,318 INFO L470 AbstractCegarLoop]: Abstraction has 103646 states and 171790 transitions. [2021-12-06 21:01:31,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 21:01:31,319 INFO L276 IsEmpty]: Start isEmpty. Operand 103646 states and 171790 transitions. [2021-12-06 21:01:31,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 21:01:31,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:31,334 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:31,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 21:01:31,334 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:31,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash 295305951, now seen corresponding path program 1 times [2021-12-06 21:01:31,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:31,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980848295] [2021-12-06 21:01:31,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:31,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:01:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:01:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:01:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:01:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:01:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:01:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:01:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:01:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:01:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:01:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 21:01:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:01:31,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:31,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980848295] [2021-12-06 21:01:31,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980848295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:31,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:31,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:01:31,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565060468] [2021-12-06 21:01:31,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:31,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:01:31,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:01:31,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:01:31,418 INFO L87 Difference]: Start difference. First operand 103646 states and 171790 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 21:01:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:36,333 INFO L93 Difference]: Finished difference Result 103829 states and 175351 transitions. [2021-12-06 21:01:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 21:01:36,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 116 [2021-12-06 21:01:36,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:36,335 INFO L225 Difference]: With dead ends: 103829 [2021-12-06 21:01:36,335 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 21:01:36,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-12-06 21:01:36,446 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 1146 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:36,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 1867 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:01:36,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 21:01:36,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 21:01:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:36,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 21:01:36,458 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2021-12-06 21:01:36,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:36,458 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 21:01:36,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 21:01:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 21:01:36,459 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 21:01:36,461 INFO L764 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 21:01:36,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 21:01:36,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 21:02:18,772 WARN L227 SmtUtils]: Spent 39.93s on a formula simplification that was a NOOP. DAG size: 1158 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 21:04:44,266 WARN L227 SmtUtils]: Spent 2.42m on a formula simplification that was a NOOP. DAG size: 2192 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 21:05:23,838 WARN L227 SmtUtils]: Spent 39.09s on a formula simplification that was a NOOP. DAG size: 1158 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 21:06:02,583 WARN L227 SmtUtils]: Spent 38.74s on a formula simplification that was a NOOP. DAG size: 1158 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 21:06:41,378 WARN L227 SmtUtils]: Spent 38.79s on a formula simplification that was a NOOP. DAG size: 1158 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)