./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product30.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_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/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_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/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_3cbd4af0-a655-4bdb-9407-20be471fd64e/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 f0b632d57a1aaab7587941b987ac776406d0d2705d0d18f7c4a153447ae1ce66 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:03:34,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:03:34,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:03:34,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:03:34,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:03:34,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:03:34,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:03:34,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:03:34,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:03:34,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:03:34,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:03:34,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:03:34,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:03:34,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:03:34,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:03:34,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:03:34,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:03:34,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:03:34,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:03:34,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:03:34,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:03:34,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:03:34,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:03:34,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:03:34,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:03:34,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:03:34,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:03:34,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:03:34,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:03:34,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:03:34,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:03:34,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:03:34,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:03:34,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:03:34,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:03:34,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:03:34,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:03:34,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:03:34,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:03:34,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:03:34,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:03:34,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 21:03:34,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:03:34,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:03:34,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:03:34,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:03:34,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:03:34,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:03:34,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:03:34,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:03:34,461 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:03:34,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:03:34,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:03:34,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:03:34,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:03:34,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:03:34,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:03:34,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:03:34,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:03:34,463 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:03:34,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:03:34,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:03:34,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:03:34,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:03:34,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:03:34,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:03:34,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:03:34,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:03:34,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:03:34,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:03:34,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:03:34,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:03:34,465 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:03:34,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:03:34,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:03:34,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:03:34,465 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_3cbd4af0-a655-4bdb-9407-20be471fd64e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0b632d57a1aaab7587941b987ac776406d0d2705d0d18f7c4a153447ae1ce66 [2021-12-06 21:03:34,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:03:34,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:03:34,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:03:34,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:03:34,655 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:03:34,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec7_product30.cil.c [2021-12-06 21:03:34,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/data/c88e6a181/856fc70af67c4cb3b191c48154503df2/FLAG637056683 [2021-12-06 21:03:35,145 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:03:35,145 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/sv-benchmarks/c/product-lines/email_spec7_product30.cil.c [2021-12-06 21:03:35,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/data/c88e6a181/856fc70af67c4cb3b191c48154503df2/FLAG637056683 [2021-12-06 21:03:35,172 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/data/c88e6a181/856fc70af67c4cb3b191c48154503df2 [2021-12-06 21:03:35,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:03:35,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:03:35,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:03:35,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:03:35,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:03:35,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36542043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35, skipping insertion in model container [2021-12-06 21:03:35,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:03:35,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:03:35,489 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_3cbd4af0-a655-4bdb-9407-20be471fd64e/sv-benchmarks/c/product-lines/email_spec7_product30.cil.c[50838,50851] [2021-12-06 21:03:35,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:03:35,550 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:03:35,609 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_3cbd4af0-a655-4bdb-9407-20be471fd64e/sv-benchmarks/c/product-lines/email_spec7_product30.cil.c[50838,50851] [2021-12-06 21:03:35,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:03:35,649 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:03:35,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35 WrapperNode [2021-12-06 21:03:35,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:03:35,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:03:35,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:03:35,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:03:35,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,733 INFO L137 Inliner]: procedures = 131, calls = 215, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 896 [2021-12-06 21:03:35,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:03:35,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:03:35,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:03:35,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:03:35,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:03:35,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:03:35,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:03:35,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:03:35,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35" (1/1) ... [2021-12-06 21:03:35,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:03:35,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:35,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:03:35,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:03:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-06 21:03:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-06 21:03:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 21:03:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 21:03:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 21:03:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 21:03:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 21:03:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 21:03:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 21:03:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 21:03:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 21:03:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 21:03:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 21:03:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 21:03:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 21:03:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 21:03:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-06 21:03:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-06 21:03:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 21:03:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 21:03:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 21:03:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 21:03:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 21:03:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 21:03:35,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 21:03:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:03:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-06 21:03:35,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-06 21:03:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-06 21:03:35,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-06 21:03:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 21:03:35,861 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 21:03:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 21:03:35,861 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 21:03:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 21:03:35,862 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 21:03:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-06 21:03:35,862 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-06 21:03:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 21:03:35,862 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 21:03:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 21:03:35,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 21:03:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 21:03:35,863 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 21:03:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 21:03:35,863 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 21:03:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 21:03:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 21:03:35,863 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 21:03:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:03:35,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:03:36,005 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:03:36,007 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:03:36,447 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:03:36,454 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:03:36,455 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 21:03:36,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:03:36 BoogieIcfgContainer [2021-12-06 21:03:36,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:03:36,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:03:36,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:03:36,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:03:36,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:03:35" (1/3) ... [2021-12-06 21:03:36,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6481cd4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:03:36, skipping insertion in model container [2021-12-06 21:03:36,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:03:35" (2/3) ... [2021-12-06 21:03:36,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6481cd4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:03:36, skipping insertion in model container [2021-12-06 21:03:36,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:03:36" (3/3) ... [2021-12-06 21:03:36,463 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product30.cil.c [2021-12-06 21:03:36,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:03:36,467 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 21:03:36,502 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:03:36,507 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 21:03:36,507 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 21:03:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 344 states, 267 states have (on average 1.5168539325842696) internal successors, (405), 271 states have internal predecessors, (405), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-06 21:03:36,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 21:03:36,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:36,541 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:36,541 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:36,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:36,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1085574528, now seen corresponding path program 1 times [2021-12-06 21:03:36,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:36,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620290130] [2021-12-06 21:03:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:36,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:03:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:03:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:03:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 21:03:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 21:03:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 21:03:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 21:03:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:03:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 21:03:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:03:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:03:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 21:03:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:03:36,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:36,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620290130] [2021-12-06 21:03:36,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620290130] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:03:36,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447061956] [2021-12-06 21:03:36,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:36,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:36,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:36,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:03:36,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:03:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 21:03:37,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:03:37,246 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 21:03:37,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:03:37,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447061956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:37,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:03:37,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-06 21:03:37,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182283309] [2021-12-06 21:03:37,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:37,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 21:03:37,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:37,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 21:03:37,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:03:37,273 INFO L87 Difference]: Start difference. First operand has 344 states, 267 states have (on average 1.5168539325842696) internal successors, (405), 271 states have internal predecessors, (405), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:37,315 INFO L93 Difference]: Finished difference Result 534 states and 772 transitions. [2021-12-06 21:03:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 21:03:37,317 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 120 [2021-12-06 21:03:37,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:37,328 INFO L225 Difference]: With dead ends: 534 [2021-12-06 21:03:37,328 INFO L226 Difference]: Without dead ends: 337 [2021-12-06 21:03:37,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 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 21:03:37,335 INFO L933 BasicCegarLoop]: 505 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, 505 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 21:03:37,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:03:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-06 21:03:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2021-12-06 21:03:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 261 states have (on average 1.5095785440613028) internal successors, (394), 264 states have internal predecessors, (394), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-06 21:03:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 497 transitions. [2021-12-06 21:03:37,393 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 497 transitions. Word has length 120 [2021-12-06 21:03:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:37,394 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 497 transitions. [2021-12-06 21:03:37,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:37,395 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 497 transitions. [2021-12-06 21:03:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 21:03:37,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:37,399 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:37,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:03:37,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:37,600 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:37,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:37,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1999884835, now seen corresponding path program 1 times [2021-12-06 21:03:37,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:37,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937877503] [2021-12-06 21:03:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:37,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:03:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:03:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:03:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 21:03:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 21:03:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:03:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 21:03:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:03:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 21:03:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 21:03:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:03:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 21:03:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:03:37,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:37,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937877503] [2021-12-06 21:03:37,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937877503] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:03:37,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002701180] [2021-12-06 21:03:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:37,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:37,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:37,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:03:37,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:03:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:37,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 21:03:37,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:03:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 21:03:38,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:03:38,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002701180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:38,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:03:38,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 21:03:38,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943351423] [2021-12-06 21:03:38,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:38,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:03:38,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:38,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:03:38,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:03:38,021 INFO L87 Difference]: Start difference. First operand 337 states and 497 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:38,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:38,048 INFO L93 Difference]: Finished difference Result 524 states and 753 transitions. [2021-12-06 21:03:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:03:38,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2021-12-06 21:03:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:38,052 INFO L225 Difference]: With dead ends: 524 [2021-12-06 21:03:38,052 INFO L226 Difference]: Without dead ends: 340 [2021-12-06 21:03:38,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 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 21:03:38,054 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 1 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 988 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 21:03:38,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 988 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:03:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-12-06 21:03:38,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 339. [2021-12-06 21:03:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 263 states have (on average 1.505703422053232) internal successors, (396), 266 states have internal predecessors, (396), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-06 21:03:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 499 transitions. [2021-12-06 21:03:38,081 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 499 transitions. Word has length 121 [2021-12-06 21:03:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:38,081 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 499 transitions. [2021-12-06 21:03:38,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 499 transitions. [2021-12-06 21:03:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 21:03:38,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:38,085 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:38,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 21:03:38,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:38,287 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:38,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:38,289 INFO L85 PathProgramCache]: Analyzing trace with hash -900691787, now seen corresponding path program 1 times [2021-12-06 21:03:38,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:38,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693693964] [2021-12-06 21:03:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:38,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:03:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:03:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:03:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 21:03:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:03:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 21:03:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 21:03:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:03:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:03:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:03:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:03:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 21:03:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 21:03:38,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:38,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693693964] [2021-12-06 21:03:38,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693693964] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:03:38,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010925084] [2021-12-06 21:03:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:38,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:38,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:38,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:03:38,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 21:03:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:38,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:03:38,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:03:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 21:03:38,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:03:38,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010925084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:38,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:03:38,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 21:03:38,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498023877] [2021-12-06 21:03:38,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:38,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:03:38,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:38,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:03:38,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:03:38,761 INFO L87 Difference]: Start difference. First operand 339 states and 499 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:38,785 INFO L93 Difference]: Finished difference Result 708 states and 1057 transitions. [2021-12-06 21:03:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:03:38,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2021-12-06 21:03:38,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:38,789 INFO L225 Difference]: With dead ends: 708 [2021-12-06 21:03:38,789 INFO L226 Difference]: Without dead ends: 396 [2021-12-06 21:03:38,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 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 21:03:38,791 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 107 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 965 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 21:03:38,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 965 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:03:38,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-06 21:03:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 388. [2021-12-06 21:03:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 301 states have (on average 1.521594684385382) internal successors, (458), 304 states have internal predecessors, (458), 63 states have call successors, (63), 23 states have call predecessors, (63), 23 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-06 21:03:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 583 transitions. [2021-12-06 21:03:38,819 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 583 transitions. Word has length 130 [2021-12-06 21:03:38,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:38,820 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 583 transitions. [2021-12-06 21:03:38,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:38,820 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 583 transitions. [2021-12-06 21:03:38,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 21:03:38,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:38,824 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:38,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 21:03:39,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 21:03:39,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:39,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2052561232, now seen corresponding path program 1 times [2021-12-06 21:03:39,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:39,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668461216] [2021-12-06 21:03:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:39,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 21:03:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 21:03:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 21:03:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 21:03:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 21:03:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:03:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 21:03:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 21:03:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:03:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:03:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 21:03:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 21:03:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 21:03:39,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:39,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668461216] [2021-12-06 21:03:39,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668461216] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:03:39,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551306120] [2021-12-06 21:03:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:39,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:39,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:39,155 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:03:39,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 21:03:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:03:39,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:03:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 21:03:39,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:03:39,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551306120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:39,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:03:39,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 21:03:39,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117112322] [2021-12-06 21:03:39,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:39,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:03:39,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:39,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:03:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:03:39,468 INFO L87 Difference]: Start difference. First operand 388 states and 583 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 21:03:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:39,524 INFO L93 Difference]: Finished difference Result 767 states and 1156 transitions. [2021-12-06 21:03:39,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:03:39,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2021-12-06 21:03:39,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:39,527 INFO L225 Difference]: With dead ends: 767 [2021-12-06 21:03:39,528 INFO L226 Difference]: Without dead ends: 390 [2021-12-06 21:03:39,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 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 21:03:39,530 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 125 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1808 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 21:03:39,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1808 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:03:39,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-06 21:03:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2021-12-06 21:03:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 302 states have (on average 1.5198675496688743) internal successors, (459), 306 states have internal predecessors, (459), 63 states have call successors, (63), 23 states have call predecessors, (63), 24 states have return successors, (64), 62 states have call predecessors, (64), 62 states have call successors, (64) [2021-12-06 21:03:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 586 transitions. [2021-12-06 21:03:39,550 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 586 transitions. Word has length 131 [2021-12-06 21:03:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:39,551 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 586 transitions. [2021-12-06 21:03:39,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 21:03:39,551 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 586 transitions. [2021-12-06 21:03:39,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 21:03:39,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:39,554 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:39,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 21:03:39,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:39,755 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:39,756 INFO L85 PathProgramCache]: Analyzing trace with hash 903079965, now seen corresponding path program 1 times [2021-12-06 21:03:39,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:39,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194429081] [2021-12-06 21:03:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:39,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 21:03:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 21:03:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 21:03:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 21:03:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:03:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 21:03:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 21:03:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:03:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 21:03:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 21:03:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 21:03:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 21:03:39,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:39,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194429081] [2021-12-06 21:03:39,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194429081] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:03:39,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125028043] [2021-12-06 21:03:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:39,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:39,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:39,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:03:39,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 21:03:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 21:03:40,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:03:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 21:03:40,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:03:40,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125028043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:40,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:03:40,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 21:03:40,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068036079] [2021-12-06 21:03:40,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:40,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:03:40,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:40,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:03:40,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:03:40,287 INFO L87 Difference]: Start difference. First operand 390 states and 586 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 21:03:40,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:40,350 INFO L93 Difference]: Finished difference Result 769 states and 1161 transitions. [2021-12-06 21:03:40,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:03:40,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 132 [2021-12-06 21:03:40,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:40,353 INFO L225 Difference]: With dead ends: 769 [2021-12-06 21:03:40,353 INFO L226 Difference]: Without dead ends: 392 [2021-12-06 21:03:40,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 156 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 21:03:40,355 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 124 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1797 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 21:03:40,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1797 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:03:40,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-06 21:03:40,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-12-06 21:03:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 303 states have (on average 1.518151815181518) internal successors, (460), 308 states have internal predecessors, (460), 63 states have call successors, (63), 23 states have call predecessors, (63), 25 states have return successors, (69), 62 states have call predecessors, (69), 62 states have call successors, (69) [2021-12-06 21:03:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 592 transitions. [2021-12-06 21:03:40,373 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 592 transitions. Word has length 132 [2021-12-06 21:03:40,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:40,373 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 592 transitions. [2021-12-06 21:03:40,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 21:03:40,373 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 592 transitions. [2021-12-06 21:03:40,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 21:03:40,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:40,375 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:40,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 21:03:40,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:40,577 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:40,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1904527609, now seen corresponding path program 1 times [2021-12-06 21:03:40,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:40,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347243155] [2021-12-06 21:03:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:40,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 21:03:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 21:03:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 21:03:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 21:03:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:03:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:03:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:03:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:03:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 21:03:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 21:03:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 21:03:40,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:40,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347243155] [2021-12-06 21:03:40,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347243155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:40,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:40,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:03:40,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707923663] [2021-12-06 21:03:40,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:40,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:03:40,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:40,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:03:40,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:03:40,780 INFO L87 Difference]: Start difference. First operand 392 states and 592 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 21:03:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:41,869 INFO L93 Difference]: Finished difference Result 873 states and 1320 transitions. [2021-12-06 21:03:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:03:41,869 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2021-12-06 21:03:41,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:41,873 INFO L225 Difference]: With dead ends: 873 [2021-12-06 21:03:41,873 INFO L226 Difference]: Without dead ends: 504 [2021-12-06 21:03:41,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 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 21:03:41,875 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 1261 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:41,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 1554 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:03:41,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-12-06 21:03:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 392. [2021-12-06 21:03:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 303 states have (on average 1.518151815181518) internal successors, (460), 308 states have internal predecessors, (460), 63 states have call successors, (63), 23 states have call predecessors, (63), 25 states have return successors, (68), 62 states have call predecessors, (68), 62 states have call successors, (68) [2021-12-06 21:03:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 591 transitions. [2021-12-06 21:03:41,902 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 591 transitions. Word has length 133 [2021-12-06 21:03:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:41,903 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 591 transitions. [2021-12-06 21:03:41,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 21:03:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 591 transitions. [2021-12-06 21:03:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 21:03:41,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:41,905 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:41,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 21:03:41,905 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:41,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1517342532, now seen corresponding path program 2 times [2021-12-06 21:03:41,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:41,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752826403] [2021-12-06 21:03:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:41,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 21:03:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 21:03:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 21:03:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:03:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 21:03:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 21:03:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 21:03:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:42,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 21:03:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:42,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 21:03:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:42,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:03:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:42,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 21:03:42,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:42,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752826403] [2021-12-06 21:03:42,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752826403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:42,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:42,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:03:42,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505814845] [2021-12-06 21:03:42,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:42,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:03:42,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:42,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:03:42,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:03:42,013 INFO L87 Difference]: Start difference. First operand 392 states and 591 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 21:03:42,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:42,955 INFO L93 Difference]: Finished difference Result 875 states and 1323 transitions. [2021-12-06 21:03:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:03:42,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2021-12-06 21:03:42,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:42,960 INFO L225 Difference]: With dead ends: 875 [2021-12-06 21:03:42,960 INFO L226 Difference]: Without dead ends: 506 [2021-12-06 21:03:42,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 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 21:03:42,963 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 1315 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:42,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1332 Valid, 1537 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:03:42,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-12-06 21:03:42,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 394. [2021-12-06 21:03:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 304 states have (on average 1.5164473684210527) internal successors, (461), 310 states have internal predecessors, (461), 63 states have call successors, (63), 23 states have call predecessors, (63), 26 states have return successors, (70), 62 states have call predecessors, (70), 62 states have call successors, (70) [2021-12-06 21:03:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 594 transitions. [2021-12-06 21:03:42,993 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 594 transitions. Word has length 134 [2021-12-06 21:03:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:42,994 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 594 transitions. [2021-12-06 21:03:42,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 21:03:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 594 transitions. [2021-12-06 21:03:42,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 21:03:42,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:42,996 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:42,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 21:03:42,996 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:42,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:42,996 INFO L85 PathProgramCache]: Analyzing trace with hash 682141982, now seen corresponding path program 1 times [2021-12-06 21:03:42,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:42,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493443994] [2021-12-06 21:03:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:42,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:03:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 21:03:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:03:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:03:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 21:03:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 21:03:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:03:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 21:03:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 21:03:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 21:03:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 21:03:43,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:43,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493443994] [2021-12-06 21:03:43,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493443994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:43,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:43,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 21:03:43,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383734199] [2021-12-06 21:03:43,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:43,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 21:03:43,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:43,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 21:03:43,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:03:43,114 INFO L87 Difference]: Start difference. First operand 394 states and 594 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 21:03:44,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:44,369 INFO L93 Difference]: Finished difference Result 873 states and 1318 transitions. [2021-12-06 21:03:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:03:44,369 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 135 [2021-12-06 21:03:44,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:44,373 INFO L225 Difference]: With dead ends: 873 [2021-12-06 21:03:44,373 INFO L226 Difference]: Without dead ends: 506 [2021-12-06 21:03:44,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 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 21:03:44,376 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 1410 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:44,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1410 Valid, 1994 Invalid, 3185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:03:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-12-06 21:03:44,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 394. [2021-12-06 21:03:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 304 states have (on average 1.5164473684210527) internal successors, (461), 310 states have internal predecessors, (461), 63 states have call successors, (63), 23 states have call predecessors, (63), 26 states have return successors, (69), 62 states have call predecessors, (69), 62 states have call successors, (69) [2021-12-06 21:03:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 593 transitions. [2021-12-06 21:03:44,405 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 593 transitions. Word has length 135 [2021-12-06 21:03:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:44,405 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 593 transitions. [2021-12-06 21:03:44,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 21:03:44,405 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 593 transitions. [2021-12-06 21:03:44,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-06 21:03:44,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:44,408 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:44,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 21:03:44,408 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:44,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:44,408 INFO L85 PathProgramCache]: Analyzing trace with hash 750200228, now seen corresponding path program 2 times [2021-12-06 21:03:44,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:44,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268753566] [2021-12-06 21:03:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:44,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:03:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 21:03:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 21:03:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:03:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:03:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:03:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:03:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:03:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:03:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 21:03:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 21:03:44,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:44,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268753566] [2021-12-06 21:03:44,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268753566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:44,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:44,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 21:03:44,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847982039] [2021-12-06 21:03:44,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:44,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 21:03:44,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:44,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 21:03:44,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:03:44,535 INFO L87 Difference]: Start difference. First operand 394 states and 593 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 21:03:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:45,674 INFO L93 Difference]: Finished difference Result 875 states and 1324 transitions. [2021-12-06 21:03:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:03:45,675 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 136 [2021-12-06 21:03:45,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:45,678 INFO L225 Difference]: With dead ends: 875 [2021-12-06 21:03:45,678 INFO L226 Difference]: Without dead ends: 508 [2021-12-06 21:03:45,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 21:03:45,679 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 1324 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 2906 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 3379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 2906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:45,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 2029 Invalid, 3379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 2906 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 21:03:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-12-06 21:03:45,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 396. [2021-12-06 21:03:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 305 states have (on average 1.5147540983606558) internal successors, (462), 312 states have internal predecessors, (462), 63 states have call successors, (63), 23 states have call predecessors, (63), 27 states have return successors, (74), 62 states have call predecessors, (74), 62 states have call successors, (74) [2021-12-06 21:03:45,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 599 transitions. [2021-12-06 21:03:45,699 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 599 transitions. Word has length 136 [2021-12-06 21:03:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:45,699 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 599 transitions. [2021-12-06 21:03:45,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 21:03:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 599 transitions. [2021-12-06 21:03:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-06 21:03:45,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:45,701 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:45,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:03:45,701 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:45,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:45,702 INFO L85 PathProgramCache]: Analyzing trace with hash 651233379, now seen corresponding path program 1 times [2021-12-06 21:03:45,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:45,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748914234] [2021-12-06 21:03:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:45,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:03:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 21:03:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 21:03:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 21:03:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 21:03:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:03:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:03:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 21:03:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:03:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 21:03:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 21:03:45,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:45,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748914234] [2021-12-06 21:03:45,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748914234] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:03:45,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996579837] [2021-12-06 21:03:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:45,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:45,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:45,817 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:03:45,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 21:03:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:45,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:03:45,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:03:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:03:46,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:03:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:03:46,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996579837] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:03:46,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:03:46,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-06 21:03:46,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934834310] [2021-12-06 21:03:46,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:03:46,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 21:03:46,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:46,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 21:03:46,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 21:03:46,172 INFO L87 Difference]: Start difference. First operand 396 states and 599 transitions. Second operand has 15 states, 14 states have (on average 10.428571428571429) internal successors, (146), 11 states have internal predecessors, (146), 4 states have call successors, (37), 6 states have call predecessors, (37), 3 states have return successors, (30), 3 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-06 21:03:48,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:48,014 INFO L93 Difference]: Finished difference Result 1554 states and 2552 transitions. [2021-12-06 21:03:48,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 21:03:48,015 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.428571428571429) internal successors, (146), 11 states have internal predecessors, (146), 4 states have call successors, (37), 6 states have call predecessors, (37), 3 states have return successors, (30), 3 states have call predecessors, (30), 4 states have call successors, (30) Word has length 137 [2021-12-06 21:03:48,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:48,022 INFO L225 Difference]: With dead ends: 1554 [2021-12-06 21:03:48,023 INFO L226 Difference]: Without dead ends: 1189 [2021-12-06 21:03:48,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-06 21:03:48,026 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 3111 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 4552 mSolverCounterSat, 1147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3113 SdHoareTripleChecker+Valid, 4154 SdHoareTripleChecker+Invalid, 5699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1147 IncrementalHoareTripleChecker+Valid, 4552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:48,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3113 Valid, 4154 Invalid, 5699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1147 Valid, 4552 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 21:03:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-12-06 21:03:48,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 724. [2021-12-06 21:03:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 569 states have (on average 1.569420035149385) internal successors, (893), 576 states have internal predecessors, (893), 127 states have call successors, (127), 23 states have call predecessors, (127), 27 states have return successors, (148), 126 states have call predecessors, (148), 126 states have call successors, (148) [2021-12-06 21:03:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1168 transitions. [2021-12-06 21:03:48,083 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1168 transitions. Word has length 137 [2021-12-06 21:03:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:48,083 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1168 transitions. [2021-12-06 21:03:48,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.428571428571429) internal successors, (146), 11 states have internal predecessors, (146), 4 states have call successors, (37), 6 states have call predecessors, (37), 3 states have return successors, (30), 3 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-06 21:03:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1168 transitions. [2021-12-06 21:03:48,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-06 21:03:48,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:48,087 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:48,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 21:03:48,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 21:03:48,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2008994295, now seen corresponding path program 1 times [2021-12-06 21:03:48,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:48,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347739453] [2021-12-06 21:03:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:48,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:03:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 21:03:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:03:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 21:03:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 21:03:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 21:03:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 21:03:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 21:03:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 21:03:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 21:03:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:03:48,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:48,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347739453] [2021-12-06 21:03:48,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347739453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:48,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:48,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:03:48,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676057738] [2021-12-06 21:03:48,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:48,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:03:48,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:03:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:03:48,374 INFO L87 Difference]: Start difference. First operand 724 states and 1168 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:49,111 INFO L93 Difference]: Finished difference Result 1790 states and 2955 transitions. [2021-12-06 21:03:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:03:49,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2021-12-06 21:03:49,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:49,117 INFO L225 Difference]: With dead ends: 1790 [2021-12-06 21:03:49,117 INFO L226 Difference]: Without dead ends: 1144 [2021-12-06 21:03:49,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 21:03:49,120 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1263 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:49,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 1332 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:03:49,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-12-06 21:03:49,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1024. [2021-12-06 21:03:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 805 states have (on average 1.5875776397515529) internal successors, (1278), 812 states have internal predecessors, (1278), 191 states have call successors, (191), 23 states have call predecessors, (191), 27 states have return successors, (222), 190 states have call predecessors, (222), 190 states have call successors, (222) [2021-12-06 21:03:49,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1691 transitions. [2021-12-06 21:03:49,190 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1691 transitions. Word has length 140 [2021-12-06 21:03:49,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:49,191 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 1691 transitions. [2021-12-06 21:03:49,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1691 transitions. [2021-12-06 21:03:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 21:03:49,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:49,196 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:49,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 21:03:49,196 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:49,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1975814361, now seen corresponding path program 1 times [2021-12-06 21:03:49,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:49,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764296219] [2021-12-06 21:03:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:49,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:03:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 21:03:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:03:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:03:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 21:03:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:03:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 21:03:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 21:03:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 21:03:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 21:03:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:03:49,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:49,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764296219] [2021-12-06 21:03:49,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764296219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:49,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:49,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:03:49,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527553693] [2021-12-06 21:03:49,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:49,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:03:49,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:49,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:03:49,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:03:49,279 INFO L87 Difference]: Start difference. First operand 1024 states and 1691 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:50,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:50,040 INFO L93 Difference]: Finished difference Result 2530 states and 4235 transitions. [2021-12-06 21:03:50,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:03:50,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2021-12-06 21:03:50,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:50,049 INFO L225 Difference]: With dead ends: 2530 [2021-12-06 21:03:50,049 INFO L226 Difference]: Without dead ends: 1637 [2021-12-06 21:03:50,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 21:03:50,052 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 1317 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:50,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1332 Valid, 1284 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:03:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-12-06 21:03:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1517. [2021-12-06 21:03:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1203 states have (on average 1.5960099750623442) internal successors, (1920), 1210 states have internal predecessors, (1920), 286 states have call successors, (286), 23 states have call predecessors, (286), 27 states have return successors, (317), 285 states have call predecessors, (317), 285 states have call successors, (317) [2021-12-06 21:03:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2523 transitions. [2021-12-06 21:03:50,181 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2523 transitions. Word has length 141 [2021-12-06 21:03:50,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:50,182 INFO L470 AbstractCegarLoop]: Abstraction has 1517 states and 2523 transitions. [2021-12-06 21:03:50,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:50,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2523 transitions. [2021-12-06 21:03:50,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 21:03:50,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:50,189 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:50,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 21:03:50,189 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:50,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1644970309, now seen corresponding path program 1 times [2021-12-06 21:03:50,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:50,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532707253] [2021-12-06 21:03:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:50,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:03:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 21:03:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 21:03:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 21:03:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:03:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:03:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:03:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:03:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:03:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 21:03:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:03:50,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:50,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532707253] [2021-12-06 21:03:50,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532707253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:50,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:50,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:03:50,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064032962] [2021-12-06 21:03:50,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:50,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:03:50,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:50,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:03:50,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:03:50,273 INFO L87 Difference]: Start difference. First operand 1517 states and 2523 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:51,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:51,063 INFO L93 Difference]: Finished difference Result 3632 states and 6153 transitions. [2021-12-06 21:03:51,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:03:51,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2021-12-06 21:03:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:51,075 INFO L225 Difference]: With dead ends: 3632 [2021-12-06 21:03:51,075 INFO L226 Difference]: Without dead ends: 2381 [2021-12-06 21:03:51,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 21:03:51,078 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 1231 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:51,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1246 Valid, 1293 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:03:51,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-12-06 21:03:51,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2261. [2021-12-06 21:03:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1824 states have (on average 1.6025219298245614) internal successors, (2923), 1831 states have internal predecessors, (2923), 409 states have call successors, (409), 23 states have call predecessors, (409), 27 states have return successors, (456), 408 states have call predecessors, (456), 408 states have call successors, (456) [2021-12-06 21:03:51,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3788 transitions. [2021-12-06 21:03:51,206 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3788 transitions. Word has length 142 [2021-12-06 21:03:51,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:51,206 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 3788 transitions. [2021-12-06 21:03:51,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3788 transitions. [2021-12-06 21:03:51,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-06 21:03:51,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:51,215 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:51,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 21:03:51,216 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:51,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:51,216 INFO L85 PathProgramCache]: Analyzing trace with hash 782969318, now seen corresponding path program 1 times [2021-12-06 21:03:51,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:51,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796177253] [2021-12-06 21:03:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:51,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:03:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 21:03:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:03:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 21:03:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:03:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:03:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 21:03:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:03:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 21:03:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 21:03:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:03:51,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:51,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796177253] [2021-12-06 21:03:51,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796177253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:51,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:51,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:03:51,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901649684] [2021-12-06 21:03:51,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:51,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:03:51,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:51,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:03:51,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:03:51,301 INFO L87 Difference]: Start difference. First operand 2261 states and 3788 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:52,196 INFO L93 Difference]: Finished difference Result 5341 states and 9133 transitions. [2021-12-06 21:03:52,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:03:52,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2021-12-06 21:03:52,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:52,214 INFO L225 Difference]: With dead ends: 5341 [2021-12-06 21:03:52,214 INFO L226 Difference]: Without dead ends: 3565 [2021-12-06 21:03:52,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 21:03:52,219 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1305 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:52,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 1281 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:03:52,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2021-12-06 21:03:52,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 3445. [2021-12-06 21:03:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 2829 states have (on average 1.6065747613997878) internal successors, (4545), 2836 states have internal predecessors, (4545), 588 states have call successors, (588), 23 states have call predecessors, (588), 27 states have return successors, (661), 587 states have call predecessors, (661), 587 states have call successors, (661) [2021-12-06 21:03:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 5794 transitions. [2021-12-06 21:03:52,416 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 5794 transitions. Word has length 143 [2021-12-06 21:03:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:52,417 INFO L470 AbstractCegarLoop]: Abstraction has 3445 states and 5794 transitions. [2021-12-06 21:03:52,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:52,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 5794 transitions. [2021-12-06 21:03:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-06 21:03:52,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:52,427 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:52,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 21:03:52,427 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:52,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:52,428 INFO L85 PathProgramCache]: Analyzing trace with hash -984143745, now seen corresponding path program 1 times [2021-12-06 21:03:52,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:52,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774784341] [2021-12-06 21:03:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:52,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:03:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 21:03:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:03:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 21:03:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 21:03:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:03:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 21:03:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 21:03:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 21:03:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 21:03:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:03:52,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:52,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774784341] [2021-12-06 21:03:52,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774784341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:52,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:52,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:03:52,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526896411] [2021-12-06 21:03:52,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:52,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:03:52,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:52,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:03:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:03:52,506 INFO L87 Difference]: Start difference. First operand 3445 states and 5794 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:53,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:53,492 INFO L93 Difference]: Finished difference Result 8414 states and 14449 transitions. [2021-12-06 21:03:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:03:53,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2021-12-06 21:03:53,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:53,520 INFO L225 Difference]: With dead ends: 8414 [2021-12-06 21:03:53,520 INFO L226 Difference]: Without dead ends: 5706 [2021-12-06 21:03:53,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 21:03:53,526 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1260 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:53,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 1331 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:03:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2021-12-06 21:03:53,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 5586. [2021-12-06 21:03:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 4594 states have (on average 1.6001306051371353) internal successors, (7351), 4601 states have internal predecessors, (7351), 964 states have call successors, (964), 23 states have call predecessors, (964), 27 states have return successors, (1081), 963 states have call predecessors, (1081), 963 states have call successors, (1081) [2021-12-06 21:03:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 9396 transitions. [2021-12-06 21:03:53,855 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 9396 transitions. Word has length 144 [2021-12-06 21:03:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:53,855 INFO L470 AbstractCegarLoop]: Abstraction has 5586 states and 9396 transitions. [2021-12-06 21:03:53,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 9396 transitions. [2021-12-06 21:03:53,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 21:03:53,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:53,872 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:53,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 21:03:53,872 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:53,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:53,873 INFO L85 PathProgramCache]: Analyzing trace with hash -59712478, now seen corresponding path program 1 times [2021-12-06 21:03:53,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:53,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083470121] [2021-12-06 21:03:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:53,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:03:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 21:03:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:03:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 21:03:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 21:03:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 21:03:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 21:03:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 21:03:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 21:03:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 21:03:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:03:53,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:53,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083470121] [2021-12-06 21:03:53,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083470121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:53,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:53,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:03:53,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300708157] [2021-12-06 21:03:53,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:53,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:03:53,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:53,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:03:53,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:03:53,950 INFO L87 Difference]: Start difference. First operand 5586 states and 9396 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:55,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:55,141 INFO L93 Difference]: Finished difference Result 13836 states and 23750 transitions. [2021-12-06 21:03:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:03:55,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2021-12-06 21:03:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:55,183 INFO L225 Difference]: With dead ends: 13836 [2021-12-06 21:03:55,183 INFO L226 Difference]: Without dead ends: 9389 [2021-12-06 21:03:55,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 21:03:55,194 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 1285 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:55,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1300 Valid, 1272 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:03:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9389 states. [2021-12-06 21:03:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9389 to 9269. [2021-12-06 21:03:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9269 states, 7671 states have (on average 1.5979663668361361) internal successors, (12258), 7678 states have internal predecessors, (12258), 1570 states have call successors, (1570), 23 states have call predecessors, (1570), 27 states have return successors, (1765), 1569 states have call predecessors, (1765), 1569 states have call successors, (1765) [2021-12-06 21:03:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9269 states to 9269 states and 15593 transitions. [2021-12-06 21:03:55,717 INFO L78 Accepts]: Start accepts. Automaton has 9269 states and 15593 transitions. Word has length 145 [2021-12-06 21:03:55,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:55,717 INFO L470 AbstractCegarLoop]: Abstraction has 9269 states and 15593 transitions. [2021-12-06 21:03:55,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:55,718 INFO L276 IsEmpty]: Start isEmpty. Operand 9269 states and 15593 transitions. [2021-12-06 21:03:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 21:03:55,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:55,740 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:55,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 21:03:55,740 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:55,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1982181443, now seen corresponding path program 1 times [2021-12-06 21:03:55,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:55,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857600018] [2021-12-06 21:03:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:55,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:03:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 21:03:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 21:03:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 21:03:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 21:03:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:03:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 21:03:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 21:03:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 21:03:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 21:03:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:03:55,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:55,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857600018] [2021-12-06 21:03:55,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857600018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:55,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:55,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:03:55,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89889575] [2021-12-06 21:03:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:55,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:03:55,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:03:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:03:55,854 INFO L87 Difference]: Start difference. First operand 9269 states and 15593 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:03:57,272 INFO L93 Difference]: Finished difference Result 24020 states and 41191 transitions. [2021-12-06 21:03:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:03:57,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2021-12-06 21:03:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:03:57,313 INFO L225 Difference]: With dead ends: 24020 [2021-12-06 21:03:57,313 INFO L226 Difference]: Without dead ends: 16342 [2021-12-06 21:03:57,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 21:03:57,331 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1241 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:03:57,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 1312 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:03:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16342 states. [2021-12-06 21:03:58,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16342 to 16222. [2021-12-06 21:03:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16222 states, 13421 states have (on average 1.5891513300052158) internal successors, (21328), 13428 states have internal predecessors, (21328), 2773 states have call successors, (2773), 23 states have call predecessors, (2773), 27 states have return successors, (3112), 2772 states have call predecessors, (3112), 2772 states have call successors, (3112) [2021-12-06 21:03:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16222 states to 16222 states and 27213 transitions. [2021-12-06 21:03:58,156 INFO L78 Accepts]: Start accepts. Automaton has 16222 states and 27213 transitions. Word has length 146 [2021-12-06 21:03:58,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:03:58,156 INFO L470 AbstractCegarLoop]: Abstraction has 16222 states and 27213 transitions. [2021-12-06 21:03:58,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:03:58,156 INFO L276 IsEmpty]: Start isEmpty. Operand 16222 states and 27213 transitions. [2021-12-06 21:03:58,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-06 21:03:58,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:03:58,185 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:58,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 21:03:58,185 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:03:58,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash 884344641, now seen corresponding path program 1 times [2021-12-06 21:03:58,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:58,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926017275] [2021-12-06 21:03:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:58,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:03:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:03:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:03:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:03:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:03:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:03:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 21:03:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 21:03:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 21:03:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 21:03:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:03:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 21:03:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 21:03:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 21:03:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 21:03:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:03:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:03:58,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:58,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926017275] [2021-12-06 21:03:58,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926017275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:58,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:03:58,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:03:58,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240182211] [2021-12-06 21:03:58,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:58,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:03:58,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:58,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:03:58,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:03:58,258 INFO L87 Difference]: Start difference. First operand 16222 states and 27213 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:04:00,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:04:00,262 INFO L93 Difference]: Finished difference Result 42986 states and 73588 transitions. [2021-12-06 21:04:00,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:04:00,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2021-12-06 21:04:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:04:00,335 INFO L225 Difference]: With dead ends: 42986 [2021-12-06 21:04:00,335 INFO L226 Difference]: Without dead ends: 28997 [2021-12-06 21:04:00,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 21:04:00,359 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1239 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:04:00,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 1288 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:04:00,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28997 states. [2021-12-06 21:04:01,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28997 to 28877. [2021-12-06 21:04:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28877 states, 24037 states have (on average 1.5848483587802138) internal successors, (38095), 24044 states have internal predecessors, (38095), 4812 states have call successors, (4812), 23 states have call predecessors, (4812), 27 states have return successors, (5425), 4811 states have call predecessors, (5425), 4811 states have call successors, (5425) [2021-12-06 21:04:02,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28877 states to 28877 states and 48332 transitions. [2021-12-06 21:04:02,038 INFO L78 Accepts]: Start accepts. Automaton has 28877 states and 48332 transitions. Word has length 147 [2021-12-06 21:04:02,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:04:02,038 INFO L470 AbstractCegarLoop]: Abstraction has 28877 states and 48332 transitions. [2021-12-06 21:04:02,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:04:02,038 INFO L276 IsEmpty]: Start isEmpty. Operand 28877 states and 48332 transitions. [2021-12-06 21:04:02,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-06 21:04:02,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:04:02,075 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:02,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 21:04:02,075 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:04:02,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash -448195941, now seen corresponding path program 1 times [2021-12-06 21:04:02,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:04:02,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388691500] [2021-12-06 21:04:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:02,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:04:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:04:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:04:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:04:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:04:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:04:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:04:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 21:04:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 21:04:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 21:04:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 21:04:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 21:04:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:04:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 21:04:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 21:04:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 21:04:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:04:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:04:02,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:04:02,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388691500] [2021-12-06 21:04:02,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388691500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:02,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:04:02,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:04:02,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997244159] [2021-12-06 21:04:02,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:02,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:04:02,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:04:02,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:04:02,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:04:02,155 INFO L87 Difference]: Start difference. First operand 28877 states and 48332 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:04:04,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:04:04,991 INFO L93 Difference]: Finished difference Result 78748 states and 133952 transitions. [2021-12-06 21:04:04,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:04:04,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2021-12-06 21:04:04,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:04:05,133 INFO L225 Difference]: With dead ends: 78748 [2021-12-06 21:04:05,133 INFO L226 Difference]: Without dead ends: 52876 [2021-12-06 21:04:05,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 21:04:05,182 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 1292 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:04:05,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 1289 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:04:05,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52876 states. [2021-12-06 21:04:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52876 to 52756. [2021-12-06 21:04:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52756 states, 44201 states have (on average 1.5791045451460375) internal successors, (69798), 44208 states have internal predecessors, (69798), 8527 states have call successors, (8527), 23 states have call predecessors, (8527), 27 states have return successors, (9672), 8526 states have call predecessors, (9672), 8526 states have call successors, (9672) [2021-12-06 21:04:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52756 states to 52756 states and 87997 transitions. [2021-12-06 21:04:08,189 INFO L78 Accepts]: Start accepts. Automaton has 52756 states and 87997 transitions. Word has length 148 [2021-12-06 21:04:08,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:04:08,189 INFO L470 AbstractCegarLoop]: Abstraction has 52756 states and 87997 transitions. [2021-12-06 21:04:08,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:04:08,189 INFO L276 IsEmpty]: Start isEmpty. Operand 52756 states and 87997 transitions. [2021-12-06 21:04:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 21:04:08,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:04:08,230 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:08,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 21:04:08,230 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:04:08,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:08,231 INFO L85 PathProgramCache]: Analyzing trace with hash -642537439, now seen corresponding path program 1 times [2021-12-06 21:04:08,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:04:08,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998841231] [2021-12-06 21:04:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:08,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:04:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:04:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:04:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:04:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:04:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:04:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:04:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 21:04:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 21:04:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 21:04:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 21:04:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 21:04:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 21:04:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 21:04:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 21:04:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 21:04:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:04:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:04:08,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:04:08,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998841231] [2021-12-06 21:04:08,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998841231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:08,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:04:08,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:04:08,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059850528] [2021-12-06 21:04:08,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:08,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:04:08,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:04:08,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:04:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:04:08,313 INFO L87 Difference]: Start difference. First operand 52756 states and 87997 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:04:13,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:04:13,341 INFO L93 Difference]: Finished difference Result 98519 states and 167882 transitions. [2021-12-06 21:04:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:04:13,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 149 [2021-12-06 21:04:13,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:04:13,636 INFO L225 Difference]: With dead ends: 98519 [2021-12-06 21:04:13,636 INFO L226 Difference]: Without dead ends: 98335 [2021-12-06 21:04:13,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 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 21:04:13,677 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 1316 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:04:13,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 1286 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:04:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98335 states. [2021-12-06 21:04:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98335 to 98215. [2021-12-06 21:04:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98215 states, 82861 states have (on average 1.5718492415008267) internal successors, (130245), 82868 states have internal predecessors, (130245), 15326 states have call successors, (15326), 23 states have call predecessors, (15326), 27 states have return successors, (17517), 15325 states have call predecessors, (17517), 15325 states have call successors, (17517) [2021-12-06 21:04:18,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98215 states to 98215 states and 163088 transitions. [2021-12-06 21:04:18,823 INFO L78 Accepts]: Start accepts. Automaton has 98215 states and 163088 transitions. Word has length 149 [2021-12-06 21:04:18,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:04:18,823 INFO L470 AbstractCegarLoop]: Abstraction has 98215 states and 163088 transitions. [2021-12-06 21:04:18,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:04:18,823 INFO L276 IsEmpty]: Start isEmpty. Operand 98215 states and 163088 transitions. [2021-12-06 21:04:18,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 21:04:18,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:04:18,876 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:18,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 21:04:18,876 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:04:18,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:18,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1845181436, now seen corresponding path program 1 times [2021-12-06 21:04:18,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:04:18,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334951569] [2021-12-06 21:04:18,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:18,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:04:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:18,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:04:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:18,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:04:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:18,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:04:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:04:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:04:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:04:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:04:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:04:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:18,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:04:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:18,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:04:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:19,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 21:04:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 21:04:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:19,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 21:04:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:19,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 21:04:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:19,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 21:04:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:19,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:04:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 21:04:19,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:04:19,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334951569] [2021-12-06 21:04:19,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334951569] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:04:19,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297895818] [2021-12-06 21:04:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:19,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:04:19,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:04:19,038 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:04:19,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 21:04:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:19,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 21:04:19,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:04:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 21:04:19,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:04:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 21:04:19,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297895818] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:04:19,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:04:19,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2021-12-06 21:04:19,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101196533] [2021-12-06 21:04:19,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:04:19,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 21:04:19,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:04:19,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 21:04:19,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2021-12-06 21:04:19,646 INFO L87 Difference]: Start difference. First operand 98215 states and 163088 transitions. Second operand has 32 states, 30 states have (on average 8.266666666666667) internal successors, (248), 24 states have internal predecessors, (248), 9 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42) [2021-12-06 21:05:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:05:01,741 INFO L93 Difference]: Finished difference Result 588145 states and 1025538 transitions. [2021-12-06 21:05:01,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2021-12-06 21:05:01,741 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.266666666666667) internal successors, (248), 24 states have internal predecessors, (248), 9 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42) Word has length 150 [2021-12-06 21:05:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:05:04,239 INFO L225 Difference]: With dead ends: 588145 [2021-12-06 21:05:04,239 INFO L226 Difference]: Without dead ends: 587965 [2021-12-06 21:05:04,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12562 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4333, Invalid=31199, Unknown=0, NotChecked=0, Total=35532 [2021-12-06 21:05:04,441 INFO L933 BasicCegarLoop]: 1765 mSDtfsCounter, 7429 mSDsluCounter, 16512 mSDsCounter, 0 mSdLazyCounter, 41934 mSolverCounterSat, 6612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7453 SdHoareTripleChecker+Valid, 18277 SdHoareTripleChecker+Invalid, 48546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6612 IncrementalHoareTripleChecker+Valid, 41934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:05:04,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7453 Valid, 18277 Invalid, 48546 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6612 Valid, 41934 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2021-12-06 21:05:04,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587965 states. [2021-12-06 21:05:32,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587965 to 391425. [2021-12-06 21:05:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391425 states, 330340 states have (on average 1.5725918750378398) internal successors, (519490), 330154 states have internal predecessors, (519490), 60932 states have call successors, (60932), 126 states have call predecessors, (60932), 152 states have return successors, (84906), 61160 states have call predecessors, (84906), 60926 states have call successors, (84906) [2021-12-06 21:05:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391425 states to 391425 states and 665328 transitions. [2021-12-06 21:05:34,138 INFO L78 Accepts]: Start accepts. Automaton has 391425 states and 665328 transitions. Word has length 150 [2021-12-06 21:05:34,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:05:34,138 INFO L470 AbstractCegarLoop]: Abstraction has 391425 states and 665328 transitions. [2021-12-06 21:05:34,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 8.266666666666667) internal successors, (248), 24 states have internal predecessors, (248), 9 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42) [2021-12-06 21:05:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 391425 states and 665328 transitions. [2021-12-06 21:05:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 21:05:34,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:05:34,404 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:05:34,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-06 21:05:34,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:05:34,606 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:05:34,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:05:34,607 INFO L85 PathProgramCache]: Analyzing trace with hash -155329019, now seen corresponding path program 1 times [2021-12-06 21:05:34,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:05:34,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726039373] [2021-12-06 21:05:34,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:34,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:05:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:05:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:05:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:05:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:05:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:05:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:05:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:05:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:05:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 21:05:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 21:05:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 21:05:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 21:05:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 21:05:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 21:05:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 21:05:34,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:05:34,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726039373] [2021-12-06 21:05:34,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726039373] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:05:34,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069597161] [2021-12-06 21:05:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:34,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:05:34,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:05:34,735 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:05:34,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 21:05:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 21:05:34,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:05:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 21:05:35,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:05:35,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069597161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:05:35,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:05:35,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2021-12-06 21:05:35,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671394908] [2021-12-06 21:05:35,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:05:35,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:05:35,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:05:35,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:05:35,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-12-06 21:05:35,016 INFO L87 Difference]: Start difference. First operand 391425 states and 665328 transitions. Second operand has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 21:05:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:05:54,411 INFO L93 Difference]: Finished difference Result 393375 states and 668157 transitions. [2021-12-06 21:05:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:05:54,412 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 152 [2021-12-06 21:05:54,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:05:55,889 INFO L225 Difference]: With dead ends: 393375 [2021-12-06 21:05:55,890 INFO L226 Difference]: Without dead ends: 391773 [2021-12-06 21:05:56,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-12-06 21:05:56,014 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 719 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:05:56,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 3349 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:05:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391773 states. [2021-12-06 21:06:20,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391773 to 391701. [2021-12-06 21:06:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391701 states, 330524 states have (on average 1.5724909537582747) internal successors, (519746), 330352 states have internal predecessors, (519746), 61018 states have call successors, (61018), 132 states have call predecessors, (61018), 158 states have return successors, (85024), 61244 states have call predecessors, (85024), 61012 states have call successors, (85024) [2021-12-06 21:06:22,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391701 states to 391701 states and 665788 transitions. [2021-12-06 21:06:22,155 INFO L78 Accepts]: Start accepts. Automaton has 391701 states and 665788 transitions. Word has length 152 [2021-12-06 21:06:22,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:06:22,155 INFO L470 AbstractCegarLoop]: Abstraction has 391701 states and 665788 transitions. [2021-12-06 21:06:22,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 21:06:22,155 INFO L276 IsEmpty]: Start isEmpty. Operand 391701 states and 665788 transitions. [2021-12-06 21:06:22,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 21:06:22,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:06:22,426 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:22,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-06 21:06:22,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:06:22,627 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:06:22,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:22,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1529424819, now seen corresponding path program 1 times [2021-12-06 21:06:22,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:22,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958084304] [2021-12-06 21:06:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:22,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:06:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:06:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 21:06:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 21:06:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 21:06:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 21:06:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 21:06:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 21:06:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:06:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 21:06:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 21:06:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 21:06:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 21:06:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 21:06:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 21:06:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 21:06:22,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:22,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958084304] [2021-12-06 21:06:22,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958084304] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:06:22,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10661392] [2021-12-06 21:06:22,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:22,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:06:22,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:06:22,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:06:22,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 21:06:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:22,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 21:06:22,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:06:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 21:06:22,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:06:22,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10661392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:22,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:06:22,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 21:06:22,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251331688] [2021-12-06 21:06:22,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:22,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:06:22,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:06:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:06:22,967 INFO L87 Difference]: Start difference. First operand 391701 states and 665788 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:06:44,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:06:44,293 INFO L93 Difference]: Finished difference Result 587555 states and 1003011 transitions. [2021-12-06 21:06:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:06:44,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2021-12-06 21:06:44,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:06:45,800 INFO L225 Difference]: With dead ends: 587555 [2021-12-06 21:06:45,800 INFO L226 Difference]: Without dead ends: 391717 [2021-12-06 21:06:46,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:06:46,175 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 123 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:06:46,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1793 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 21:06:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391717 states. [2021-12-06 21:07:10,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391717 to 391701. [2021-12-06 21:07:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391701 states, 330524 states have (on average 1.5724849027604653) internal successors, (519744), 330352 states have internal predecessors, (519744), 61018 states have call successors, (61018), 132 states have call predecessors, (61018), 158 states have return successors, (85024), 61244 states have call predecessors, (85024), 61012 states have call successors, (85024) [2021-12-06 21:07:12,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391701 states to 391701 states and 665786 transitions. [2021-12-06 21:07:12,720 INFO L78 Accepts]: Start accepts. Automaton has 391701 states and 665786 transitions. Word has length 152 [2021-12-06 21:07:12,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:07:12,720 INFO L470 AbstractCegarLoop]: Abstraction has 391701 states and 665786 transitions. [2021-12-06 21:07:12,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 21:07:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 391701 states and 665786 transitions. [2021-12-06 21:07:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 21:07:13,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:07:13,112 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:13,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 21:07:13,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:07:13,313 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:07:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:07:13,315 INFO L85 PathProgramCache]: Analyzing trace with hash -483879297, now seen corresponding path program 1 times [2021-12-06 21:07:13,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:07:13,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191854442] [2021-12-06 21:07:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:07:13,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:07:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:07:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:07:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:07:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:07:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:07:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:07:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:07:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:07:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:07:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:07:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:07:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 21:07:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 21:07:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 21:07:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 21:07:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:07:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 21:07:13,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:07:13,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191854442] [2021-12-06 21:07:13,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191854442] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:07:13,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32567426] [2021-12-06 21:07:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:07:13,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:07:13,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:07:13,447 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:07:13,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 21:07:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:13,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 21:07:13,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:07:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 21:07:13,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:07:13,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32567426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:07:13,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:07:13,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2021-12-06 21:07:13,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400618147] [2021-12-06 21:07:13,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:07:13,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:07:13,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:07:13,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:07:13,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2021-12-06 21:07:13,745 INFO L87 Difference]: Start difference. First operand 391701 states and 665786 transitions. Second operand has 10 states, 8 states have (on average 13.625) internal successors, (109), 9 states have internal predecessors, (109), 6 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-06 21:07:34,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:07:34,393 INFO L93 Difference]: Finished difference Result 393009 states and 667660 transitions. [2021-12-06 21:07:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:07:34,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 13.625) internal successors, (109), 9 states have internal predecessors, (109), 6 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 153 [2021-12-06 21:07:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:07:35,696 INFO L225 Difference]: With dead ends: 393009 [2021-12-06 21:07:35,696 INFO L226 Difference]: Without dead ends: 391715 [2021-12-06 21:07:35,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-12-06 21:07:35,817 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 253 mSDsluCounter, 3769 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 4266 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:07:35,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 4266 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:07:36,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391715 states. [2021-12-06 21:08:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391715 to 391713. [2021-12-06 21:08:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391713 states, 330530 states have (on average 1.5724745106344356) internal successors, (519750), 330364 states have internal predecessors, (519750), 61018 states have call successors, (61018), 132 states have call predecessors, (61018), 164 states have return successors, (85044), 61244 states have call predecessors, (85044), 61012 states have call successors, (85044) [2021-12-06 21:08:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391713 states to 391713 states and 665812 transitions. [2021-12-06 21:08:01,946 INFO L78 Accepts]: Start accepts. Automaton has 391713 states and 665812 transitions. Word has length 153 [2021-12-06 21:08:01,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:01,946 INFO L470 AbstractCegarLoop]: Abstraction has 391713 states and 665812 transitions. [2021-12-06 21:08:01,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 13.625) internal successors, (109), 9 states have internal predecessors, (109), 6 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-06 21:08:01,946 INFO L276 IsEmpty]: Start isEmpty. Operand 391713 states and 665812 transitions. [2021-12-06 21:08:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 21:08:02,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:02,368 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:02,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 21:08:02,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:02,569 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:02,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:02,570 INFO L85 PathProgramCache]: Analyzing trace with hash -491638656, now seen corresponding path program 1 times [2021-12-06 21:08:02,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:02,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012616313] [2021-12-06 21:08:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:02,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:08:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:08:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:08:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:08:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:08:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:08:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:08:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:08:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:08:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:08:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:08:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 21:08:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 21:08:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 21:08:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 21:08:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:08:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 21:08:02,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:02,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012616313] [2021-12-06 21:08:02,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012616313] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:08:02,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316944491] [2021-12-06 21:08:02,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:02,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:02,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:02,703 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:02,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 21:08:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:02,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 21:08:02,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 21:08:03,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:08:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 21:08:03,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316944491] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 21:08:03,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:08:03,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13, 13] total 28 [2021-12-06 21:08:03,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64377603] [2021-12-06 21:08:03,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:03,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 21:08:03,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:03,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 21:08:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2021-12-06 21:08:03,278 INFO L87 Difference]: Start difference. First operand 391713 states and 665812 transitions. Second operand has 13 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 6 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 21:08:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:08:25,974 INFO L93 Difference]: Finished difference Result 393831 states and 668878 transitions. [2021-12-06 21:08:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 21:08:25,975 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 6 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 153 [2021-12-06 21:08:25,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:08:27,416 INFO L225 Difference]: With dead ends: 393831 [2021-12-06 21:08:27,416 INFO L226 Difference]: Without dead ends: 392665 [2021-12-06 21:08:27,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 323 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=1725, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 21:08:27,545 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 1293 mSDsluCounter, 3986 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:08:27,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 4523 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:08:27,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392665 states. [2021-12-06 21:08:55,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392665 to 392309. [2021-12-06 21:08:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392309 states, 330967 states have (on average 1.5722262340354174) internal successors, (520355), 330820 states have internal predecessors, (520355), 61132 states have call successors, (61132), 164 states have call predecessors, (61132), 209 states have return successors, (85211), 61362 states have call predecessors, (85211), 61124 states have call successors, (85211) [2021-12-06 21:08:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392309 states to 392309 states and 666698 transitions. [2021-12-06 21:08:56,739 INFO L78 Accepts]: Start accepts. Automaton has 392309 states and 666698 transitions. Word has length 153 [2021-12-06 21:08:56,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:08:56,740 INFO L470 AbstractCegarLoop]: Abstraction has 392309 states and 666698 transitions. [2021-12-06 21:08:56,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 6 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 21:08:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 392309 states and 666698 transitions. [2021-12-06 21:08:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 21:08:57,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:08:57,140 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:08:57,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 21:08:57,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 21:08:57,343 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:08:57,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:57,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1503393652, now seen corresponding path program 1 times [2021-12-06 21:08:57,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:57,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191876396] [2021-12-06 21:08:57,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:57,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:08:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:08:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:08:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:08:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:08:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:08:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:08:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:08:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 21:08:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 21:08:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 21:08:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 21:08:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 21:08:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 21:08:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 21:08:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:08:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 21:08:57,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:57,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191876396] [2021-12-06 21:08:57,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191876396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:57,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:08:57,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:08:57,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735524382] [2021-12-06 21:08:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:57,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:08:57,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:08:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:08:57,488 INFO L87 Difference]: Start difference. First operand 392309 states and 666698 transitions. Second operand has 9 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 21:09:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:09:20,531 INFO L93 Difference]: Finished difference Result 393727 states and 681768 transitions. [2021-12-06 21:09:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 21:09:20,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2021-12-06 21:09:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:09:21,991 INFO L225 Difference]: With dead ends: 393727 [2021-12-06 21:09:21,991 INFO L226 Difference]: Without dead ends: 392765 [2021-12-06 21:09:22,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-12-06 21:09:22,112 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 1139 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:09:22,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 1670 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:09:22,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392765 states. [2021-12-06 21:09:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392765 to 391619. [2021-12-06 21:09:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391619 states, 330467 states have (on average 1.5725231263636006) internal successors, (519667), 330294 states have internal predecessors, (519667), 60974 states have call successors, (60974), 148 states have call predecessors, (60974), 177 states have return successors, (84993), 61200 states have call predecessors, (84993), 60966 states have call successors, (84993) [2021-12-06 21:09:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391619 states to 391619 states and 665634 transitions. [2021-12-06 21:09:52,097 INFO L78 Accepts]: Start accepts. Automaton has 391619 states and 665634 transitions. Word has length 153 [2021-12-06 21:09:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:09:52,098 INFO L470 AbstractCegarLoop]: Abstraction has 391619 states and 665634 transitions. [2021-12-06 21:09:52,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 21:09:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 391619 states and 665634 transitions. [2021-12-06 21:09:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-06 21:09:52,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:09:52,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:52,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 21:09:52,378 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:09:52,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash -195881584, now seen corresponding path program 1 times [2021-12-06 21:09:52,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:52,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150289404] [2021-12-06 21:09:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:52,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:09:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:09:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:09:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:09:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:09:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:09:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:09:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:09:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:09:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:09:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 21:09:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 21:09:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 21:09:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 21:09:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 21:09:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:09:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 21:09:52,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:52,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150289404] [2021-12-06 21:09:52,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150289404] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:09:52,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506007141] [2021-12-06 21:09:52,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:52,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:52,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:09:52,480 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:09:52,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 21:09:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:52,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 21:09:52,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:09:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 21:09:53,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:09:53,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506007141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:53,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:09:53,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 25 [2021-12-06 21:09:53,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709801038] [2021-12-06 21:09:53,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:53,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 21:09:53,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:53,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 21:09:53,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-12-06 21:09:53,065 INFO L87 Difference]: Start difference. First operand 391619 states and 665634 transitions. Second operand has 14 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 21:10:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:10:39,488 INFO L93 Difference]: Finished difference Result 777951 states and 1344158 transitions. [2021-12-06 21:10:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 21:10:39,489 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 154 [2021-12-06 21:10:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:10:42,554 INFO L225 Difference]: With dead ends: 777951 [2021-12-06 21:10:42,554 INFO L226 Difference]: Without dead ends: 776579 [2021-12-06 21:10:42,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 21:10:42,831 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 1461 mSDsluCounter, 4735 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 5286 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:10:42,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 5286 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:10:43,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776579 states. [2021-12-06 21:11:43,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776579 to 776091. [2021-12-06 21:11:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776091 states, 655157 states have (on average 1.5738838171613827) internal successors, (1031141), 654460 states have internal predecessors, (1031141), 120586 states have call successors, (120586), 292 states have call predecessors, (120586), 347 states have return successors, (189715), 121386 states have call predecessors, (189715), 120570 states have call successors, (189715) [2021-12-06 21:11:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776091 states to 776091 states and 1341442 transitions. [2021-12-06 21:11:47,678 INFO L78 Accepts]: Start accepts. Automaton has 776091 states and 1341442 transitions. Word has length 154 [2021-12-06 21:11:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:11:47,678 INFO L470 AbstractCegarLoop]: Abstraction has 776091 states and 1341442 transitions. [2021-12-06 21:11:47,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 21:11:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 776091 states and 1341442 transitions. [2021-12-06 21:11:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-06 21:11:48,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:11:48,441 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:11:48,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 21:11:48,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 21:11:48,643 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:11:48,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:11:48,644 INFO L85 PathProgramCache]: Analyzing trace with hash -644578223, now seen corresponding path program 1 times [2021-12-06 21:11:48,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:11:48,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828132740] [2021-12-06 21:11:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:11:48,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:11:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:11:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 21:11:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:11:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 21:11:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 21:11:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 21:11:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 21:11:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:11:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 21:11:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 21:11:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 21:11:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 21:11:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 21:11:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 21:11:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 21:11:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:11:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 21:11:48,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:11:48,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828132740] [2021-12-06 21:11:48,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828132740] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:11:48,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406465376] [2021-12-06 21:11:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:11:48,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:11:48,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:11:48,781 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:11:48,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbd4af0-a655-4bdb-9407-20be471fd64e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 21:11:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:11:48,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 21:11:48,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:11:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 21:11:49,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:11:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 21:11:49,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406465376] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:11:49,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:11:49,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2021-12-06 21:11:49,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931831205] [2021-12-06 21:11:49,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:11:49,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 21:11:49,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:11:49,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 21:11:49,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-12-06 21:11:49,343 INFO L87 Difference]: Start difference. First operand 776091 states and 1341442 transitions. Second operand has 27 states, 26 states have (on average 10.038461538461538) internal successors, (261), 19 states have internal predecessors, (261), 7 states have call successors, (48), 12 states have call predecessors, (48), 10 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43)