./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product31.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_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/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_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/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_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/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 d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:42:31,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:42:31,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:42:31,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:42:31,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:42:31,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:42:31,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:42:31,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:42:31,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:42:31,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:42:31,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:42:31,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:42:31,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:42:31,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:42:31,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:42:31,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:42:31,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:42:31,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:42:31,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:42:31,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:42:31,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:42:31,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:42:31,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:42:31,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:42:31,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:42:31,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:42:31,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:42:31,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:42:31,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:42:31,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:42:31,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:42:31,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:42:31,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:42:31,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:42:31,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:42:31,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:42:31,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:42:31,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:42:31,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:42:31,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:42:31,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:42:31,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:42:31,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:42:31,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:42:31,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:42:31,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:42:31,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:42:31,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:42:31,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:42:31,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:42:31,145 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:42:31,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:42:31,145 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:42:31,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:42:31,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:42:31,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:42:31,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:42:31,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:42:31,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:42:31,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:42:31,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:42:31,147 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:42:31,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:42:31,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:42:31,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:42:31,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:42:31,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:42:31,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:42:31,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:42:31,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:42:31,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:42:31,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:42:31,149 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:42:31,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:42:31,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:42:31,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:42:31,149 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_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 [2021-12-06 22:42:31,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:42:31,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:42:31,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:42:31,357 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:42:31,358 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:42:31,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2021-12-06 22:42:31,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/data/a86c3c574/3bb7e7995e3c462daad349143975e241/FLAG1ee517ea3 [2021-12-06 22:42:31,864 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:42:31,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2021-12-06 22:42:31,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/data/a86c3c574/3bb7e7995e3c462daad349143975e241/FLAG1ee517ea3 [2021-12-06 22:42:31,892 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/data/a86c3c574/3bb7e7995e3c462daad349143975e241 [2021-12-06 22:42:31,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:42:31,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:42:31,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:42:31,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:42:31,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:42:31,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:42:31" (1/1) ... [2021-12-06 22:42:31,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bb47a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:31, skipping insertion in model container [2021-12-06 22:42:31,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:42:31" (1/1) ... [2021-12-06 22:42:31,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:42:31,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:42:32,328 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_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c[61351,61364] [2021-12-06 22:42:32,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:42:32,346 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:42:32,413 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_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c[61351,61364] [2021-12-06 22:42:32,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:42:32,447 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:42:32,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32 WrapperNode [2021-12-06 22:42:32,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:42:32,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:42:32,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:42:32,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:42:32,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32" (1/1) ... [2021-12-06 22:42:32,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32" (1/1) ... [2021-12-06 22:42:32,538 INFO L137 Inliner]: procedures = 131, calls = 219, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 1010 [2021-12-06 22:42:32,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:42:32,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:42:32,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:42:32,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:42:32,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32" (1/1) ... [2021-12-06 22:42:32,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32" (1/1) ... [2021-12-06 22:42:32,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32" (1/1) ... [2021-12-06 22:42:32,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32" (1/1) ... [2021-12-06 22:42:32,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32" (1/1) ... [2021-12-06 22:42:32,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32" (1/1) ... [2021-12-06 22:42:32,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32" (1/1) ... [2021-12-06 22:42:32,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:42:32,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:42:32,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:42:32,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:42:32,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32" (1/1) ... [2021-12-06 22:42:32,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:42:32,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:42:32,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:42:32,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:42:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-06 22:42:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-06 22:42:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 22:42:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 22:42:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 22:42:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 22:42:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 22:42:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 22:42:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 22:42:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 22:42:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 22:42:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 22:42:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 22:42:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 22:42:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 22:42:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 22:42:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-06 22:42:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-06 22:42:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 22:42:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 22:42:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 22:42:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 22:42:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 22:42:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 22:42:32,678 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 22:42:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:42:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-06 22:42:32,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-06 22:42:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-06 22:42:32,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-06 22:42:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 22:42:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 22:42:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 22:42:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 22:42:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 22:42:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 22:42:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-06 22:42:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-06 22:42:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-06 22:42:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-06 22:42:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 22:42:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 22:42:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 22:42:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 22:42:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 22:42:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 22:42:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 22:42:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 22:42:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:42:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 22:42:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 22:42:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:42:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:42:32,860 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:42:32,862 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:42:33,368 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:42:33,379 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:42:33,380 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:42:33,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:42:33 BoogieIcfgContainer [2021-12-06 22:42:33,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:42:33,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:42:33,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:42:33,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:42:33,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:42:31" (1/3) ... [2021-12-06 22:42:33,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bc7de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:42:33, skipping insertion in model container [2021-12-06 22:42:33,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:42:32" (2/3) ... [2021-12-06 22:42:33,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bc7de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:42:33, skipping insertion in model container [2021-12-06 22:42:33,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:42:33" (3/3) ... [2021-12-06 22:42:33,390 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product31.cil.c [2021-12-06 22:42:33,395 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:42:33,396 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:42:33,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:42:33,451 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 22:42:33,451 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:42:33,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 375 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 292 states have internal predecessors, (431), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-12-06 22:42:33,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-06 22:42:33,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:33,497 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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 22:42:33,498 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1583649315, now seen corresponding path program 1 times [2021-12-06 22:42:33,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:33,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160497510] [2021-12-06 22:42:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:33,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:42:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:42:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:42:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 22:42:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:42:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:42:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:42:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:42:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:42:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:42:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:42:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:42:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:42:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:42:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:42:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 22:42:33,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:33,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160497510] [2021-12-06 22:42:33,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160497510] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:42:33,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908362045] [2021-12-06 22:42:33,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:33,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:42:33,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:42:33,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:42:33,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:42:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 22:42:34,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:42:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 22:42:34,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:42:34,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908362045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:34,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:42:34,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-06 22:42:34,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750177727] [2021-12-06 22:42:34,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:34,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:42:34,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:34,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:42:34,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:42:34,353 INFO L87 Difference]: Start difference. First operand has 375 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 292 states have internal predecessors, (431), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:34,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:34,414 INFO L93 Difference]: Finished difference Result 596 states and 860 transitions. [2021-12-06 22:42:34,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:42:34,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2021-12-06 22:42:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:34,430 INFO L225 Difference]: With dead ends: 596 [2021-12-06 22:42:34,430 INFO L226 Difference]: Without dead ends: 368 [2021-12-06 22:42:34,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 176 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 22:42:34,439 INFO L933 BasicCegarLoop]: 549 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, 549 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 22:42:34,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:42:34,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-12-06 22:42:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2021-12-06 22:42:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 282 states have (on average 1.4893617021276595) internal successors, (420), 285 states have internal predecessors, (420), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-12-06 22:42:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 541 transitions. [2021-12-06 22:42:34,495 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 541 transitions. Word has length 142 [2021-12-06 22:42:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:34,497 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 541 transitions. [2021-12-06 22:42:34,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:34,497 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 541 transitions. [2021-12-06 22:42:34,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-06 22:42:34,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:34,502 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2021-12-06 22:42:34,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:42:34,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 22:42:34,703 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:34,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:34,704 INFO L85 PathProgramCache]: Analyzing trace with hash -235666976, now seen corresponding path program 1 times [2021-12-06 22:42:34,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:34,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144144910] [2021-12-06 22:42:34,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:34,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:42:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:42:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:42:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:42:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:42:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:42:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:42:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:42:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:42:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:42:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:42:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:42:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:42:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:42:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:42:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 22:42:34,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:34,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144144910] [2021-12-06 22:42:34,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144144910] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:42:34,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92166041] [2021-12-06 22:42:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:34,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:42:34,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:42:34,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:42:34,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:42:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:42:35,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:42:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 22:42:35,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:42:35,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92166041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:35,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:42:35,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 22:42:35,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744700753] [2021-12-06 22:42:35,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:35,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:42:35,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:35,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:42:35,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:42:35,204 INFO L87 Difference]: Start difference. First operand 368 states and 541 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:35,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:35,231 INFO L93 Difference]: Finished difference Result 586 states and 841 transitions. [2021-12-06 22:42:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:42:35,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 143 [2021-12-06 22:42:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:35,235 INFO L225 Difference]: With dead ends: 586 [2021-12-06 22:42:35,235 INFO L226 Difference]: Without dead ends: 371 [2021-12-06 22:42:35,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 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 22:42:35,237 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 1 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1076 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 22:42:35,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1076 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:42:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-06 22:42:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 370. [2021-12-06 22:42:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.4859154929577465) internal successors, (422), 287 states have internal predecessors, (422), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-12-06 22:42:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 543 transitions. [2021-12-06 22:42:35,261 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 543 transitions. Word has length 143 [2021-12-06 22:42:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:35,261 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 543 transitions. [2021-12-06 22:42:35,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:35,261 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 543 transitions. [2021-12-06 22:42:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 22:42:35,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:35,264 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:35,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 22:42:35,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:42:35,466 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:35,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:35,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1061274825, now seen corresponding path program 1 times [2021-12-06 22:42:35,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:35,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797341354] [2021-12-06 22:42:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:35,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:42:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:42:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:42:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 22:42:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:42:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:42:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:42:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:42:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:42:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:42:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:42:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:42:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:42:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:42:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:42:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 22:42:35,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:35,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797341354] [2021-12-06 22:42:35,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797341354] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:42:35,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651968491] [2021-12-06 22:42:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:35,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:42:35,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:42:35,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:42:35,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:42:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:35,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:42:35,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:42:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 22:42:36,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:42:36,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651968491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:36,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:42:36,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 22:42:36,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356964159] [2021-12-06 22:42:36,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:36,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:42:36,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:36,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:42:36,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:42:36,030 INFO L87 Difference]: Start difference. First operand 370 states and 543 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:36,065 INFO L93 Difference]: Finished difference Result 770 states and 1145 transitions. [2021-12-06 22:42:36,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:42:36,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 149 [2021-12-06 22:42:36,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:36,070 INFO L225 Difference]: With dead ends: 770 [2021-12-06 22:42:36,070 INFO L226 Difference]: Without dead ends: 427 [2021-12-06 22:42:36,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 182 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 22:42:36,073 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 107 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1052 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 22:42:36,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1052 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:42:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-12-06 22:42:36,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 419. [2021-12-06 22:42:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 325 states have internal predecessors, (484), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-12-06 22:42:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 627 transitions. [2021-12-06 22:42:36,102 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 627 transitions. Word has length 149 [2021-12-06 22:42:36,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:36,102 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 627 transitions. [2021-12-06 22:42:36,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:36,103 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 627 transitions. [2021-12-06 22:42:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 22:42:36,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:36,107 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:36,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:42:36,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:42:36,309 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:36,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1298752054, now seen corresponding path program 1 times [2021-12-06 22:42:36,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:36,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515961365] [2021-12-06 22:42:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:36,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:42:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:42:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:42:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:42:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:42:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:42:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:42:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:42:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:42:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:42:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:42:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:42:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:42:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:42:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:42:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 22:42:36,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:36,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515961365] [2021-12-06 22:42:36,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515961365] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:42:36,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233761784] [2021-12-06 22:42:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:36,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:42:36,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:42:36,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:42:36,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:42:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:36,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:42:36,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:42:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:42:36,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:42:36,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233761784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:36,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:42:36,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 22:42:36,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667187327] [2021-12-06 22:42:36,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:36,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:42:36,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:36,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:42:36,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:42:36,924 INFO L87 Difference]: Start difference. First operand 419 states and 627 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:42:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:36,985 INFO L93 Difference]: Finished difference Result 829 states and 1244 transitions. [2021-12-06 22:42:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:42:36,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 150 [2021-12-06 22:42:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:36,988 INFO L225 Difference]: With dead ends: 829 [2021-12-06 22:42:36,988 INFO L226 Difference]: Without dead ends: 421 [2021-12-06 22:42:36,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 181 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 22:42:36,991 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 125 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1984 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 22:42:36,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1984 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:42:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-12-06 22:42:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-12-06 22:42:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 323 states have (on average 1.501547987616099) internal successors, (485), 327 states have internal predecessors, (485), 72 states have call successors, (72), 24 states have call predecessors, (72), 25 states have return successors, (73), 71 states have call predecessors, (73), 71 states have call successors, (73) [2021-12-06 22:42:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 630 transitions. [2021-12-06 22:42:37,008 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 630 transitions. Word has length 150 [2021-12-06 22:42:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:37,009 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 630 transitions. [2021-12-06 22:42:37,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:42:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 630 transitions. [2021-12-06 22:42:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 22:42:37,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:37,011 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:37,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 22:42:37,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:42:37,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:37,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash 761272147, now seen corresponding path program 1 times [2021-12-06 22:42:37,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:37,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351350729] [2021-12-06 22:42:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:37,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:42:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:42:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 22:42:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:42:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:42:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:42:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:42:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:42:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:42:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:42:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:42:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:42:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 22:42:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 22:42:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:42:37,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:37,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351350729] [2021-12-06 22:42:37,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351350729] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:42:37,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84836567] [2021-12-06 22:42:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:37,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:42:37,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:42:37,428 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:42:37,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:42:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:37,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:42:37,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:42:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:42:37,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:42:37,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84836567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:37,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:42:37,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 22:42:37,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415183358] [2021-12-06 22:42:37,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:37,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:42:37,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:37,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:42:37,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:42:37,772 INFO L87 Difference]: Start difference. First operand 421 states and 630 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:42:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:37,826 INFO L93 Difference]: Finished difference Result 831 states and 1249 transitions. [2021-12-06 22:42:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:42:37,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2021-12-06 22:42:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:37,830 INFO L225 Difference]: With dead ends: 831 [2021-12-06 22:42:37,830 INFO L226 Difference]: Without dead ends: 423 [2021-12-06 22:42:37,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 181 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 22:42:37,832 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 124 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1973 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 22:42:37,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1973 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:42:37,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-06 22:42:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2021-12-06 22:42:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 324 states have (on average 1.5) internal successors, (486), 329 states have internal predecessors, (486), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (78), 71 states have call predecessors, (78), 71 states have call successors, (78) [2021-12-06 22:42:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 636 transitions. [2021-12-06 22:42:37,851 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 636 transitions. Word has length 151 [2021-12-06 22:42:37,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:37,851 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 636 transitions. [2021-12-06 22:42:37,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:42:37,851 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 636 transitions. [2021-12-06 22:42:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 22:42:37,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:37,854 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:37,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:42:38,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:42:38,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:38,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:38,055 INFO L85 PathProgramCache]: Analyzing trace with hash 440087637, now seen corresponding path program 1 times [2021-12-06 22:42:38,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:38,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840824624] [2021-12-06 22:42:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:38,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:42:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:42:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:42:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:42:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:42:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:42:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:42:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:42:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:42:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:42:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:42:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:42:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:42:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:38,159 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 22:42:38,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:38,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840824624] [2021-12-06 22:42:38,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840824624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:38,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:38,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:42:38,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902944060] [2021-12-06 22:42:38,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:38,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:42:38,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:38,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:42:38,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:42:38,160 INFO L87 Difference]: Start difference. First operand 423 states and 636 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:42:39,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:39,360 INFO L93 Difference]: Finished difference Result 1007 states and 1512 transitions. [2021-12-06 22:42:39,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:42:39,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 152 [2021-12-06 22:42:39,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:39,365 INFO L225 Difference]: With dead ends: 1007 [2021-12-06 22:42:39,365 INFO L226 Difference]: Without dead ends: 607 [2021-12-06 22:42:39,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 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 22:42:39,368 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 1430 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:39,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 1717 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 1923 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:42:39,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-12-06 22:42:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 423. [2021-12-06 22:42:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 324 states have (on average 1.5) internal successors, (486), 329 states have internal predecessors, (486), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2021-12-06 22:42:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 635 transitions. [2021-12-06 22:42:39,418 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 635 transitions. Word has length 152 [2021-12-06 22:42:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:39,419 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 635 transitions. [2021-12-06 22:42:39,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:42:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 635 transitions. [2021-12-06 22:42:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 22:42:39,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:39,423 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:39,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:42:39,423 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:39,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:39,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1678063700, now seen corresponding path program 2 times [2021-12-06 22:42:39,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:39,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826027202] [2021-12-06 22:42:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:39,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:42:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:42:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:42:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:42:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:42:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:42:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:42:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:42:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:42:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:42:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:42:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:42:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:42:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 22:42:39,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:39,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826027202] [2021-12-06 22:42:39,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826027202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:39,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:39,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:42:39,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658156332] [2021-12-06 22:42:39,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:39,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:42:39,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:42:39,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:42:39,528 INFO L87 Difference]: Start difference. First operand 423 states and 635 transitions. Second operand has 9 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:42:40,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:40,713 INFO L93 Difference]: Finished difference Result 1009 states and 1515 transitions. [2021-12-06 22:42:40,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:42:40,714 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 153 [2021-12-06 22:42:40,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:40,717 INFO L225 Difference]: With dead ends: 1009 [2021-12-06 22:42:40,717 INFO L226 Difference]: Without dead ends: 609 [2021-12-06 22:42:40,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 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 22:42:40,720 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 1356 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:40,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 1741 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:42:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-12-06 22:42:40,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 425. [2021-12-06 22:42:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 325 states have (on average 1.4984615384615385) internal successors, (487), 331 states have internal predecessors, (487), 72 states have call successors, (72), 24 states have call predecessors, (72), 27 states have return successors, (79), 71 states have call predecessors, (79), 71 states have call successors, (79) [2021-12-06 22:42:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 638 transitions. [2021-12-06 22:42:40,743 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 638 transitions. Word has length 153 [2021-12-06 22:42:40,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:40,743 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 638 transitions. [2021-12-06 22:42:40,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:42:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 638 transitions. [2021-12-06 22:42:40,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-06 22:42:40,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:40,746 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:40,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:42:40,746 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:40,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:40,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1058089648, now seen corresponding path program 1 times [2021-12-06 22:42:40,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:40,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369755757] [2021-12-06 22:42:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:40,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:42:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:42:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:42:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:42:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:42:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:42:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:42:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:42:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:42:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:42:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 22:42:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:42:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:42:40,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:40,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369755757] [2021-12-06 22:42:40,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369755757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:40,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:40,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:42:40,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550427279] [2021-12-06 22:42:40,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:40,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:42:40,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:42:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:42:40,868 INFO L87 Difference]: Start difference. First operand 425 states and 638 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 22:42:42,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:42,251 INFO L93 Difference]: Finished difference Result 1007 states and 1510 transitions. [2021-12-06 22:42:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:42:42,251 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 154 [2021-12-06 22:42:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:42,254 INFO L225 Difference]: With dead ends: 1007 [2021-12-06 22:42:42,254 INFO L226 Difference]: Without dead ends: 609 [2021-12-06 22:42:42,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 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 22:42:42,256 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1607 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 3912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:42,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1607 Valid, 2151 Invalid, 3912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 22:42:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-12-06 22:42:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 425. [2021-12-06 22:42:42,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 325 states have (on average 1.4984615384615385) internal successors, (487), 331 states have internal predecessors, (487), 72 states have call successors, (72), 24 states have call predecessors, (72), 27 states have return successors, (78), 71 states have call predecessors, (78), 71 states have call successors, (78) [2021-12-06 22:42:42,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 637 transitions. [2021-12-06 22:42:42,278 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 637 transitions. Word has length 154 [2021-12-06 22:42:42,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:42,278 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 637 transitions. [2021-12-06 22:42:42,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 22:42:42,279 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 637 transitions. [2021-12-06 22:42:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-06 22:42:42,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:42,281 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:42,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:42:42,281 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:42,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:42,281 INFO L85 PathProgramCache]: Analyzing trace with hash -646811012, now seen corresponding path program 2 times [2021-12-06 22:42:42,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:42,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533409958] [2021-12-06 22:42:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:42,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:42:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:42:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:42:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:42:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:42:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:42:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:42:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:42:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:42:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:42:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:42:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 22:42:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:42:42,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:42,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533409958] [2021-12-06 22:42:42,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533409958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:42,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:42,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:42:42,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105115686] [2021-12-06 22:42:42,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:42,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:42:42,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:42,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:42:42,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:42:42,407 INFO L87 Difference]: Start difference. First operand 425 states and 637 transitions. Second operand has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 22:42:43,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:43,716 INFO L93 Difference]: Finished difference Result 1009 states and 1516 transitions. [2021-12-06 22:42:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:42:43,716 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 155 [2021-12-06 22:42:43,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:43,719 INFO L225 Difference]: With dead ends: 1009 [2021-12-06 22:42:43,719 INFO L226 Difference]: Without dead ends: 611 [2021-12-06 22:42:43,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 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 22:42:43,721 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1543 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 4050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:43,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 2206 Invalid, 4050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 22:42:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-12-06 22:42:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 427. [2021-12-06 22:42:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 326 states have (on average 1.4969325153374233) internal successors, (488), 333 states have internal predecessors, (488), 72 states have call successors, (72), 24 states have call predecessors, (72), 28 states have return successors, (83), 71 states have call predecessors, (83), 71 states have call successors, (83) [2021-12-06 22:42:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 643 transitions. [2021-12-06 22:42:43,752 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 643 transitions. Word has length 155 [2021-12-06 22:42:43,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:43,753 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 643 transitions. [2021-12-06 22:42:43,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 22:42:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 643 transitions. [2021-12-06 22:42:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 22:42:43,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:43,755 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:43,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:42:43,755 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:43,756 INFO L85 PathProgramCache]: Analyzing trace with hash 396315691, now seen corresponding path program 1 times [2021-12-06 22:42:43,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:43,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387670419] [2021-12-06 22:42:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:43,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:42:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:42:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:42:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:42:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:42:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:42:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:42:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:42:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:42:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:42:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:42:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:42:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:43,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:43,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387670419] [2021-12-06 22:42:43,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387670419] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:42:43,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315956536] [2021-12-06 22:42:43,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:43,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:42:43,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:42:43,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:42:43,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:42:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:44,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:42:44,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:42:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:44,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:42:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:44,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315956536] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:42:44,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:42:44,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-06 22:42:44,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9493232] [2021-12-06 22:42:44,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:42:44,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:42:44,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:44,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:42:44,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:42:44,243 INFO L87 Difference]: Start difference. First operand 427 states and 643 transitions. Second operand has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 22:42:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:45,283 INFO L93 Difference]: Finished difference Result 1178 states and 1844 transitions. [2021-12-06 22:42:45,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:42:45,284 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 156 [2021-12-06 22:42:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:45,289 INFO L225 Difference]: With dead ends: 1178 [2021-12-06 22:42:45,289 INFO L226 Difference]: Without dead ends: 963 [2021-12-06 22:42:45,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:42:45,291 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 1817 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:45,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1862 Valid, 2034 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 22:42:45,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-12-06 22:42:45,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 755. [2021-12-06 22:42:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 590 states have (on average 1.5694915254237287) internal successors, (926), 597 states have internal predecessors, (926), 136 states have call successors, (136), 24 states have call predecessors, (136), 28 states have return successors, (157), 135 states have call predecessors, (157), 135 states have call successors, (157) [2021-12-06 22:42:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1219 transitions. [2021-12-06 22:42:45,330 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1219 transitions. Word has length 156 [2021-12-06 22:42:45,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:45,330 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 1219 transitions. [2021-12-06 22:42:45,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 22:42:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1219 transitions. [2021-12-06 22:42:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 22:42:45,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:45,334 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:45,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:42:45,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 22:42:45,536 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2001383790, now seen corresponding path program 1 times [2021-12-06 22:42:45,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:45,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530064624] [2021-12-06 22:42:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:45,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:42:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:42:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:42:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:42:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:42:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:42:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:42:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:42:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:42:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:42:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:42:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:42:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:45,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:45,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530064624] [2021-12-06 22:42:45,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530064624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:45,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:45,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:42:45,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135802013] [2021-12-06 22:42:45,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:45,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:42:45,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:45,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:42:45,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:42:45,664 INFO L87 Difference]: Start difference. First operand 755 states and 1219 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:46,498 INFO L93 Difference]: Finished difference Result 1959 states and 3215 transitions. [2021-12-06 22:42:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:42:46,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2021-12-06 22:42:46,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:46,505 INFO L225 Difference]: With dead ends: 1959 [2021-12-06 22:42:46,505 INFO L226 Difference]: Without dead ends: 1272 [2021-12-06 22:42:46,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 22:42:46,507 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 1449 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:46,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 1401 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:42:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-12-06 22:42:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1080. [2021-12-06 22:42:46,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 851 states have (on average 1.5875440658049353) internal successors, (1351), 858 states have internal predecessors, (1351), 200 states have call successors, (200), 24 states have call predecessors, (200), 28 states have return successors, (231), 199 states have call predecessors, (231), 199 states have call successors, (231) [2021-12-06 22:42:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1782 transitions. [2021-12-06 22:42:46,560 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1782 transitions. Word has length 162 [2021-12-06 22:42:46,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:46,560 INFO L470 AbstractCegarLoop]: Abstraction has 1080 states and 1782 transitions. [2021-12-06 22:42:46,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:46,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1782 transitions. [2021-12-06 22:42:46,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 22:42:46,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:46,565 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:46,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:42:46,566 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:46,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:46,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2015658466, now seen corresponding path program 1 times [2021-12-06 22:42:46,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:46,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889200132] [2021-12-06 22:42:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:46,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:42:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:42:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:42:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:42:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:42:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:42:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:42:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:42:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:42:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:42:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:42:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:42:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:46,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:46,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889200132] [2021-12-06 22:42:46,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889200132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:46,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:46,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:42:46,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635072159] [2021-12-06 22:42:46,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:46,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:42:46,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:46,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:42:46,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:42:46,651 INFO L87 Difference]: Start difference. First operand 1080 states and 1782 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:47,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:47,555 INFO L93 Difference]: Finished difference Result 2739 states and 4564 transitions. [2021-12-06 22:42:47,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:42:47,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 163 [2021-12-06 22:42:47,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:47,564 INFO L225 Difference]: With dead ends: 2739 [2021-12-06 22:42:47,564 INFO L226 Difference]: Without dead ends: 1780 [2021-12-06 22:42:47,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 22:42:47,567 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 1439 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:47,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 1409 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:42:47,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2021-12-06 22:42:47,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1588. [2021-12-06 22:42:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1264 states have (on average 1.5996835443037976) internal successors, (2022), 1271 states have internal predecessors, (2022), 295 states have call successors, (295), 24 states have call predecessors, (295), 28 states have return successors, (326), 294 states have call predecessors, (326), 294 states have call successors, (326) [2021-12-06 22:42:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2643 transitions. [2021-12-06 22:42:47,642 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2643 transitions. Word has length 163 [2021-12-06 22:42:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:47,642 INFO L470 AbstractCegarLoop]: Abstraction has 1588 states and 2643 transitions. [2021-12-06 22:42:47,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2643 transitions. [2021-12-06 22:42:47,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 22:42:47,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:47,650 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:47,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:42:47,650 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:47,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:47,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1052997964, now seen corresponding path program 1 times [2021-12-06 22:42:47,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:47,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780806707] [2021-12-06 22:42:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:47,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:42:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:42:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:42:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:42:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:42:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:42:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:42:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:42:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:42:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 22:42:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 22:42:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 22:42:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:47,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:47,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780806707] [2021-12-06 22:42:47,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780806707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:47,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:47,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:42:47,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168159805] [2021-12-06 22:42:47,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:47,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:42:47,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:47,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:42:47,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:42:47,743 INFO L87 Difference]: Start difference. First operand 1588 states and 2643 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:48,674 INFO L93 Difference]: Finished difference Result 3891 states and 6573 transitions. [2021-12-06 22:42:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:42:48,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 164 [2021-12-06 22:42:48,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:48,688 INFO L225 Difference]: With dead ends: 3891 [2021-12-06 22:42:48,688 INFO L226 Difference]: Without dead ends: 2549 [2021-12-06 22:42:48,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 22:42:48,692 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1410 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:48,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1425 Valid, 1373 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:42:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2021-12-06 22:42:48,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2357. [2021-12-06 22:42:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 1910 states have (on average 1.6089005235602094) internal successors, (3073), 1917 states have internal predecessors, (3073), 418 states have call successors, (418), 24 states have call predecessors, (418), 28 states have return successors, (465), 417 states have call predecessors, (465), 417 states have call successors, (465) [2021-12-06 22:42:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 3956 transitions. [2021-12-06 22:42:48,806 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 3956 transitions. Word has length 164 [2021-12-06 22:42:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:48,806 INFO L470 AbstractCegarLoop]: Abstraction has 2357 states and 3956 transitions. [2021-12-06 22:42:48,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 3956 transitions. [2021-12-06 22:42:48,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-06 22:42:48,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:48,819 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:48,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:42:48,819 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1041163809, now seen corresponding path program 1 times [2021-12-06 22:42:48,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:48,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485420623] [2021-12-06 22:42:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:48,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:42:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:42:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:42:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:42:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:42:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:42:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:42:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:42:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:42:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:42:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 22:42:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 22:42:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:48,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:48,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485420623] [2021-12-06 22:42:48,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485420623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:48,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:48,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:42:48,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945175877] [2021-12-06 22:42:48,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:48,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:42:48,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:48,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:42:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:42:48,915 INFO L87 Difference]: Start difference. First operand 2357 states and 3956 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:49,882 INFO L93 Difference]: Finished difference Result 5685 states and 9707 transitions. [2021-12-06 22:42:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:42:49,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 165 [2021-12-06 22:42:49,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:49,901 INFO L225 Difference]: With dead ends: 5685 [2021-12-06 22:42:49,901 INFO L226 Difference]: Without dead ends: 3778 [2021-12-06 22:42:49,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 22:42:49,905 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 1398 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:49,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 1393 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:42:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2021-12-06 22:42:50,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3586. [2021-12-06 22:42:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 2960 states have (on average 1.614864864864865) internal successors, (4780), 2967 states have internal predecessors, (4780), 597 states have call successors, (597), 24 states have call predecessors, (597), 28 states have return successors, (670), 596 states have call predecessors, (670), 596 states have call successors, (670) [2021-12-06 22:42:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 6047 transitions. [2021-12-06 22:42:50,090 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 6047 transitions. Word has length 165 [2021-12-06 22:42:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:50,090 INFO L470 AbstractCegarLoop]: Abstraction has 3586 states and 6047 transitions. [2021-12-06 22:42:50,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 6047 transitions. [2021-12-06 22:42:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-06 22:42:50,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:50,104 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:50,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:42:50,104 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:50,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:50,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1645480624, now seen corresponding path program 1 times [2021-12-06 22:42:50,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:50,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359877036] [2021-12-06 22:42:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:50,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:42:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:42:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:42:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:42:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:42:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:42:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:42:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:42:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:42:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:42:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:42:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:42:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:50,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:50,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359877036] [2021-12-06 22:42:50,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359877036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:50,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:50,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:42:50,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328970166] [2021-12-06 22:42:50,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:50,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:42:50,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:50,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:42:50,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:42:50,187 INFO L87 Difference]: Start difference. First operand 3586 states and 6047 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:51,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:51,228 INFO L93 Difference]: Finished difference Result 8633 states and 14854 transitions. [2021-12-06 22:42:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:42:51,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 166 [2021-12-06 22:42:51,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:51,256 INFO L225 Difference]: With dead ends: 8633 [2021-12-06 22:42:51,256 INFO L226 Difference]: Without dead ends: 5809 [2021-12-06 22:42:51,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 22:42:51,263 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 1348 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:51,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1363 Valid, 1423 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:42:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2021-12-06 22:42:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 5617. [2021-12-06 22:42:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5617 states, 4615 states have (on average 1.610400866738895) internal successors, (7432), 4622 states have internal predecessors, (7432), 973 states have call successors, (973), 24 states have call predecessors, (973), 28 states have return successors, (1090), 972 states have call predecessors, (1090), 972 states have call successors, (1090) [2021-12-06 22:42:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5617 states to 5617 states and 9495 transitions. [2021-12-06 22:42:51,540 INFO L78 Accepts]: Start accepts. Automaton has 5617 states and 9495 transitions. Word has length 166 [2021-12-06 22:42:51,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:51,541 INFO L470 AbstractCegarLoop]: Abstraction has 5617 states and 9495 transitions. [2021-12-06 22:42:51,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5617 states and 9495 transitions. [2021-12-06 22:42:51,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-06 22:42:51,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:51,574 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:51,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:42:51,574 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:51,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:51,575 INFO L85 PathProgramCache]: Analyzing trace with hash -769511907, now seen corresponding path program 1 times [2021-12-06 22:42:51,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:51,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426592576] [2021-12-06 22:42:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:51,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:42:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:42:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:42:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:42:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:42:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:42:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:42:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:42:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:42:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:42:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:42:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 22:42:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:51,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:51,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426592576] [2021-12-06 22:42:51,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426592576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:51,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:51,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:42:51,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642811120] [2021-12-06 22:42:51,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:51,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:42:51,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:51,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:42:51,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:42:51,677 INFO L87 Difference]: Start difference. First operand 5617 states and 9495 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:52,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:52,757 INFO L93 Difference]: Finished difference Result 13970 states and 24075 transitions. [2021-12-06 22:42:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:42:52,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 167 [2021-12-06 22:42:52,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:52,792 INFO L225 Difference]: With dead ends: 13970 [2021-12-06 22:42:52,792 INFO L226 Difference]: Without dead ends: 9492 [2021-12-06 22:42:52,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 22:42:52,802 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 1437 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:52,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1452 Valid, 1377 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:42:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9492 states. [2021-12-06 22:42:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9492 to 9300. [2021-12-06 22:42:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9300 states, 7692 states have (on average 1.609204368174727) internal successors, (12378), 7699 states have internal predecessors, (12378), 1579 states have call successors, (1579), 24 states have call predecessors, (1579), 28 states have return successors, (1774), 1578 states have call predecessors, (1774), 1578 states have call successors, (1774) [2021-12-06 22:42:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9300 states to 9300 states and 15731 transitions. [2021-12-06 22:42:53,233 INFO L78 Accepts]: Start accepts. Automaton has 9300 states and 15731 transitions. Word has length 167 [2021-12-06 22:42:53,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:53,234 INFO L470 AbstractCegarLoop]: Abstraction has 9300 states and 15731 transitions. [2021-12-06 22:42:53,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 9300 states and 15731 transitions. [2021-12-06 22:42:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-06 22:42:53,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:53,264 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:53,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:42:53,265 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:53,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:53,265 INFO L85 PathProgramCache]: Analyzing trace with hash -550902942, now seen corresponding path program 1 times [2021-12-06 22:42:53,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:53,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017039337] [2021-12-06 22:42:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:53,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:42:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:42:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:42:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:42:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:42:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:42:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:42:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 22:42:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:42:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 22:42:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:42:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 22:42:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:53,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:53,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017039337] [2021-12-06 22:42:53,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017039337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:53,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:53,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:42:53,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100058158] [2021-12-06 22:42:53,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:53,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:42:53,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:53,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:42:53,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:42:53,358 INFO L87 Difference]: Start difference. First operand 9300 states and 15731 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:54,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:54,754 INFO L93 Difference]: Finished difference Result 24154 states and 41621 transitions. [2021-12-06 22:42:54,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:42:54,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2021-12-06 22:42:54,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:54,796 INFO L225 Difference]: With dead ends: 24154 [2021-12-06 22:42:54,796 INFO L226 Difference]: Without dead ends: 16445 [2021-12-06 22:42:54,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 22:42:54,814 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 1335 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:54,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1350 Valid, 1459 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:42:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16445 states. [2021-12-06 22:42:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16445 to 16253. [2021-12-06 22:42:55,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16253 states, 13442 states have (on average 1.6009522392501117) internal successors, (21520), 13449 states have internal predecessors, (21520), 2782 states have call successors, (2782), 24 states have call predecessors, (2782), 28 states have return successors, (3121), 2781 states have call predecessors, (3121), 2781 states have call successors, (3121) [2021-12-06 22:42:55,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16253 states to 16253 states and 27423 transitions. [2021-12-06 22:42:55,503 INFO L78 Accepts]: Start accepts. Automaton has 16253 states and 27423 transitions. Word has length 168 [2021-12-06 22:42:55,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:55,504 INFO L470 AbstractCegarLoop]: Abstraction has 16253 states and 27423 transitions. [2021-12-06 22:42:55,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:55,504 INFO L276 IsEmpty]: Start isEmpty. Operand 16253 states and 27423 transitions. [2021-12-06 22:42:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-06 22:42:55,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:55,567 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:55,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:42:55,568 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:55,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:55,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1187142340, now seen corresponding path program 1 times [2021-12-06 22:42:55,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:55,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994888891] [2021-12-06 22:42:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:55,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:42:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:42:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:42:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:42:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:42:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:42:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:42:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:42:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:42:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:42:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:42:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:42:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:55,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:55,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994888891] [2021-12-06 22:42:55,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994888891] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:55,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:55,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:42:55,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143848494] [2021-12-06 22:42:55,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:55,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:42:55,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:55,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:42:55,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:42:55,653 INFO L87 Difference]: Start difference. First operand 16253 states and 27423 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:42:57,491 INFO L93 Difference]: Finished difference Result 43120 states and 74220 transitions. [2021-12-06 22:42:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:42:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2021-12-06 22:42:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:42:57,568 INFO L225 Difference]: With dead ends: 43120 [2021-12-06 22:42:57,568 INFO L226 Difference]: Without dead ends: 29100 [2021-12-06 22:42:57,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 22:42:57,590 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1331 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:42:57,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 1421 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:42:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29100 states. [2021-12-06 22:42:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29100 to 28908. [2021-12-06 22:42:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28908 states, 24058 states have (on average 1.597140244409344) internal successors, (38424), 24065 states have internal predecessors, (38424), 4821 states have call successors, (4821), 24 states have call predecessors, (4821), 28 states have return successors, (5434), 4820 states have call predecessors, (5434), 4820 states have call successors, (5434) [2021-12-06 22:42:58,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28908 states to 28908 states and 48679 transitions. [2021-12-06 22:42:58,989 INFO L78 Accepts]: Start accepts. Automaton has 28908 states and 48679 transitions. Word has length 169 [2021-12-06 22:42:58,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:42:58,989 INFO L470 AbstractCegarLoop]: Abstraction has 28908 states and 48679 transitions. [2021-12-06 22:42:58,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:42:58,989 INFO L276 IsEmpty]: Start isEmpty. Operand 28908 states and 48679 transitions. [2021-12-06 22:42:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-06 22:42:59,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:42:59,036 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:42:59,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:42:59,036 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:42:59,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:42:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1404651904, now seen corresponding path program 1 times [2021-12-06 22:42:59,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:42:59,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005650506] [2021-12-06 22:42:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:42:59,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:42:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:42:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:42:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:42:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:42:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:42:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:42:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:42:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:42:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:42:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:42:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:42:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:42:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:42:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:42:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:42:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:42:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:42:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 22:42:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 22:42:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:42:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:42:59,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:42:59,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005650506] [2021-12-06 22:42:59,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005650506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:42:59,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:42:59,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:42:59,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173690112] [2021-12-06 22:42:59,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:42:59,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:42:59,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:42:59,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:42:59,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:42:59,115 INFO L87 Difference]: Start difference. First operand 28908 states and 48679 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:43:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:43:01,659 INFO L93 Difference]: Finished difference Result 78882 states and 134979 transitions. [2021-12-06 22:43:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:43:01,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2021-12-06 22:43:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:43:01,817 INFO L225 Difference]: With dead ends: 78882 [2021-12-06 22:43:01,818 INFO L226 Difference]: Without dead ends: 52979 [2021-12-06 22:43:01,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 22:43:01,873 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 1356 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:43:01,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 1440 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:43:01,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52979 states. [2021-12-06 22:43:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52979 to 52787. [2021-12-06 22:43:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52787 states, 44222 states have (on average 1.5918095065804352) internal successors, (70393), 44229 states have internal predecessors, (70393), 8536 states have call successors, (8536), 24 states have call predecessors, (8536), 28 states have return successors, (9681), 8535 states have call predecessors, (9681), 8535 states have call successors, (9681) [2021-12-06 22:43:04,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52787 states to 52787 states and 88610 transitions. [2021-12-06 22:43:04,260 INFO L78 Accepts]: Start accepts. Automaton has 52787 states and 88610 transitions. Word has length 170 [2021-12-06 22:43:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:43:04,260 INFO L470 AbstractCegarLoop]: Abstraction has 52787 states and 88610 transitions. [2021-12-06 22:43:04,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:43:04,260 INFO L276 IsEmpty]: Start isEmpty. Operand 52787 states and 88610 transitions. [2021-12-06 22:43:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-06 22:43:04,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:43:04,334 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:43:04,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 22:43:04,335 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:43:04,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:43:04,335 INFO L85 PathProgramCache]: Analyzing trace with hash 867568476, now seen corresponding path program 1 times [2021-12-06 22:43:04,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:43:04,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243265219] [2021-12-06 22:43:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:43:04,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:43:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:43:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:43:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:43:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:43:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:43:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:43:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:43:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:43:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:43:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:43:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:43:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:43:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:43:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:43:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:43:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:43:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 22:43:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 22:43:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 22:43:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:43:04,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:43:04,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243265219] [2021-12-06 22:43:04,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243265219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:43:04,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:43:04,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:43:04,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905908626] [2021-12-06 22:43:04,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:43:04,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:43:04,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:43:04,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:43:04,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:43:04,423 INFO L87 Difference]: Start difference. First operand 52787 states and 88610 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:43:08,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:43:08,438 INFO L93 Difference]: Finished difference Result 98653 states and 169166 transitions. [2021-12-06 22:43:08,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:43:08,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 171 [2021-12-06 22:43:08,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:43:08,783 INFO L225 Difference]: With dead ends: 98653 [2021-12-06 22:43:08,783 INFO L226 Difference]: Without dead ends: 98438 [2021-12-06 22:43:08,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 22:43:08,824 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 1356 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:43:08,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 1405 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:43:08,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98438 states. [2021-12-06 22:43:12,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98438 to 98246. [2021-12-06 22:43:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98246 states, 82882 states have (on average 1.58494003523081) internal successors, (131363), 82889 states have internal predecessors, (131363), 15335 states have call successors, (15335), 24 states have call predecessors, (15335), 28 states have return successors, (17526), 15334 states have call predecessors, (17526), 15334 states have call successors, (17526) [2021-12-06 22:43:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98246 states to 98246 states and 164224 transitions. [2021-12-06 22:43:12,847 INFO L78 Accepts]: Start accepts. Automaton has 98246 states and 164224 transitions. Word has length 171 [2021-12-06 22:43:12,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:43:12,847 INFO L470 AbstractCegarLoop]: Abstraction has 98246 states and 164224 transitions. [2021-12-06 22:43:12,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:43:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 98246 states and 164224 transitions. [2021-12-06 22:43:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-06 22:43:12,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:43:12,951 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:43:12,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:43:12,951 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:43:12,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:43:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash 492317665, now seen corresponding path program 1 times [2021-12-06 22:43:12,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:43:12,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735896487] [2021-12-06 22:43:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:43:12,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:43:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:43:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:43:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:43:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:43:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:43:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:43:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:43:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:43:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:43:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:43:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:43:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:43:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:43:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:43:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 22:43:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:43:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 22:43:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:43:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 22:43:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 22:43:13,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:43:13,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735896487] [2021-12-06 22:43:13,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735896487] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:43:13,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294822397] [2021-12-06 22:43:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:43:13,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:43:13,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:43:13,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:43:13,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:43:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:43:13,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 22:43:13,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:43:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 22:43:13,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:43:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 22:43:13,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294822397] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:43:13,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:43:13,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2021-12-06 22:43:13,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834021070] [2021-12-06 22:43:13,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:43:13,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 22:43:13,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:43:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 22:43:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:43:13,707 INFO L87 Difference]: Start difference. First operand 98246 states and 164224 transitions. Second operand has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2021-12-06 22:43:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:43:54,655 INFO L93 Difference]: Finished difference Result 589520 states and 1034102 transitions. [2021-12-06 22:43:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2021-12-06 22:43:54,656 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) Word has length 172 [2021-12-06 22:43:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:43:57,306 INFO L225 Difference]: With dead ends: 589520 [2021-12-06 22:43:57,306 INFO L226 Difference]: Without dead ends: 589309 [2021-12-06 22:43:57,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12554 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4333, Invalid=31199, Unknown=0, NotChecked=0, Total=35532 [2021-12-06 22:43:57,507 INFO L933 BasicCegarLoop]: 2129 mSDtfsCounter, 7858 mSDsluCounter, 14251 mSDsCounter, 0 mSdLazyCounter, 50315 mSolverCounterSat, 9871 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7882 SdHoareTripleChecker+Valid, 16380 SdHoareTripleChecker+Invalid, 60186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9871 IncrementalHoareTripleChecker+Valid, 50315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:43:57,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7882 Valid, 16380 Invalid, 60186 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9871 Valid, 50315 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2021-12-06 22:43:57,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589309 states. [2021-12-06 22:44:21,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589309 to 391709. [2021-12-06 22:44:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391709 states, 330530 states have (on average 1.5855020724291289) internal successors, (524056), 330344 states have internal predecessors, (524056), 61020 states have call successors, (61020), 132 states have call predecessors, (61020), 158 states have return successors, (85000), 61248 states have call predecessors, (85000), 61014 states have call successors, (85000) [2021-12-06 22:44:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391709 states to 391709 states and 670076 transitions. [2021-12-06 22:44:23,466 INFO L78 Accepts]: Start accepts. Automaton has 391709 states and 670076 transitions. Word has length 172 [2021-12-06 22:44:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:44:23,466 INFO L470 AbstractCegarLoop]: Abstraction has 391709 states and 670076 transitions. [2021-12-06 22:44:23,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2021-12-06 22:44:23,467 INFO L276 IsEmpty]: Start isEmpty. Operand 391709 states and 670076 transitions. [2021-12-06 22:44:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-06 22:44:24,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:44:24,028 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:44:24,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:44:24,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:44:24,229 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:44:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:44:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2054453153, now seen corresponding path program 1 times [2021-12-06 22:44:24,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:44:24,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996080139] [2021-12-06 22:44:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:44:24,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:44:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:44:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:44:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:44:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:44:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:44:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:44:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:44:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:44:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:44:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:44:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:44:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:44:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 22:44:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:44:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:44:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:44:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:44:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 22:44:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:44:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 22:44:24,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:44:24,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996080139] [2021-12-06 22:44:24,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996080139] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:44:24,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956831523] [2021-12-06 22:44:24,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:44:24,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:44:24,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:44:24,311 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:44:24,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:44:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:44:24,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:44:24,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:44:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 22:44:24,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:44:24,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956831523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:44:24,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:44:24,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 22:44:24,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378082484] [2021-12-06 22:44:24,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:44:24,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:44:24,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:44:24,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:44:24,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:44:24,598 INFO L87 Difference]: Start difference. First operand 391709 states and 670076 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:44:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:44:41,470 INFO L93 Difference]: Finished difference Result 587569 states and 1009448 transitions. [2021-12-06 22:44:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:44:41,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 174 [2021-12-06 22:44:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:44:43,039 INFO L225 Difference]: With dead ends: 587569 [2021-12-06 22:44:43,039 INFO L226 Difference]: Without dead ends: 391725 [2021-12-06 22:44:43,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 205 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 22:44:43,481 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 124 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1972 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 22:44:43,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 1972 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:44:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391725 states. [2021-12-06 22:45:03,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391725 to 391709. [2021-12-06 22:45:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391709 states, 330530 states have (on average 1.585496021541161) internal successors, (524054), 330344 states have internal predecessors, (524054), 61020 states have call successors, (61020), 132 states have call predecessors, (61020), 158 states have return successors, (85000), 61248 states have call predecessors, (85000), 61014 states have call successors, (85000) [2021-12-06 22:45:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391709 states to 391709 states and 670074 transitions. [2021-12-06 22:45:05,424 INFO L78 Accepts]: Start accepts. Automaton has 391709 states and 670074 transitions. Word has length 174 [2021-12-06 22:45:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:45:05,424 INFO L470 AbstractCegarLoop]: Abstraction has 391709 states and 670074 transitions. [2021-12-06 22:45:05,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:45:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 391709 states and 670074 transitions. [2021-12-06 22:45:06,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-06 22:45:06,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:45:06,085 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:06,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-06 22:45:06,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 22:45:06,287 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:45:06,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:45:06,288 INFO L85 PathProgramCache]: Analyzing trace with hash -208554144, now seen corresponding path program 1 times [2021-12-06 22:45:06,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:45:06,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488989671] [2021-12-06 22:45:06,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:45:06,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:45:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:45:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:45:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:45:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:45:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:45:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:45:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:45:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:45:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:45:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:45:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:45:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:45:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 22:45:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:45:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:45:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:45:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:45:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 22:45:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:45:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 22:45:06,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:45:06,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488989671] [2021-12-06 22:45:06,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488989671] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:45:06,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598774286] [2021-12-06 22:45:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:45:06,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:45:06,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:45:06,400 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:45:06,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:45:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:06,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 22:45:06,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:45:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 22:45:06,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:45:06,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598774286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:45:06,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:45:06,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2021-12-06 22:45:06,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932529078] [2021-12-06 22:45:06,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:45:06,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:45:06,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:45:06,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:45:06,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:45:06,711 INFO L87 Difference]: Start difference. First operand 391709 states and 670074 transitions. Second operand has 9 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 22:45:23,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:45:23,448 INFO L93 Difference]: Finished difference Result 394197 states and 673691 transitions. [2021-12-06 22:45:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:45:23,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 174 [2021-12-06 22:45:23,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:45:24,751 INFO L225 Difference]: With dead ends: 394197 [2021-12-06 22:45:24,751 INFO L226 Difference]: Without dead ends: 392257 [2021-12-06 22:45:24,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 201 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 22:45:24,874 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 833 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 3664 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:45:24,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 3664 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:45:25,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392257 states. [2021-12-06 22:45:46,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392257 to 392135. [2021-12-06 22:45:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392135 states, 330816 states have (on average 1.585316308763784) internal successors, (524448), 330644 states have internal predecessors, (524448), 61154 states have call successors, (61154), 138 states have call predecessors, (61154), 164 states have return successors, (85170), 61380 states have call predecessors, (85170), 61148 states have call successors, (85170) [2021-12-06 22:45:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392135 states to 392135 states and 670772 transitions. [2021-12-06 22:45:48,001 INFO L78 Accepts]: Start accepts. Automaton has 392135 states and 670772 transitions. Word has length 174 [2021-12-06 22:45:48,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:45:48,002 INFO L470 AbstractCegarLoop]: Abstraction has 392135 states and 670772 transitions. [2021-12-06 22:45:48,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 22:45:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 392135 states and 670772 transitions. [2021-12-06 22:45:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 22:45:48,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:45:48,739 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:48,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:45:48,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 22:45:48,940 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:45:48,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:45:48,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2798069, now seen corresponding path program 1 times [2021-12-06 22:45:48,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:45:48,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463983833] [2021-12-06 22:45:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:45:48,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:45:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:45:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:48,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:45:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:45:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:48,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:45:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:45:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:48,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 22:45:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:45:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:45:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:45:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:45:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:45:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:45:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:45:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:45:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 22:45:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:45:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:45:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:45:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 22:45:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:45:49,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:45:49,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463983833] [2021-12-06 22:45:49,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463983833] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:45:49,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085857109] [2021-12-06 22:45:49,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:45:49,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:45:49,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:45:49,031 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:45:49,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:45:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:45:49,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 22:45:49,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:45:49,439 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:45:49,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:45:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 22:45:49,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085857109] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 22:45:49,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:45:49,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9, 13] total 24 [2021-12-06 22:45:49,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032834322] [2021-12-06 22:45:49,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:45:49,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:45:49,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:45:49,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:45:49,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:45:49,701 INFO L87 Difference]: Start difference. First operand 392135 states and 670772 transitions. Second operand has 13 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-06 22:46:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:46:09,748 INFO L93 Difference]: Finished difference Result 395109 states and 675132 transitions. [2021-12-06 22:46:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 22:46:09,749 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 175 [2021-12-06 22:46:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:46:11,204 INFO L225 Difference]: With dead ends: 395109 [2021-12-06 22:46:11,204 INFO L226 Difference]: Without dead ends: 393543 [2021-12-06 22:46:11,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 370 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 22:46:11,324 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 1264 mSDsluCounter, 5748 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 6368 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:46:11,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 6368 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:46:11,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393543 states. [2021-12-06 22:46:35,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393543 to 392891. [2021-12-06 22:46:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392891 states, 331361 states have (on average 1.584945120276677) internal successors, (525189), 331206 states have internal predecessors, (525189), 61320 states have call successors, (61320), 172 states have call predecessors, (61320), 209 states have return successors, (85385), 61550 states have call predecessors, (85385), 61312 states have call successors, (85385) [2021-12-06 22:46:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392891 states to 392891 states and 671894 transitions. [2021-12-06 22:46:36,961 INFO L78 Accepts]: Start accepts. Automaton has 392891 states and 671894 transitions. Word has length 175 [2021-12-06 22:46:36,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:46:36,962 INFO L470 AbstractCegarLoop]: Abstraction has 392891 states and 671894 transitions. [2021-12-06 22:46:36,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-06 22:46:36,962 INFO L276 IsEmpty]: Start isEmpty. Operand 392891 states and 671894 transitions. [2021-12-06 22:46:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 22:46:37,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:46:37,502 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:46:37,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 22:46:37,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 22:46:37,705 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:46:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:46:37,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1771431359, now seen corresponding path program 1 times [2021-12-06 22:46:37,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:46:37,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240997558] [2021-12-06 22:46:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:46:37,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:46:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:46:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:46:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:46:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:46:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:46:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 22:46:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:46:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:46:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:46:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:46:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:46:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:46:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:46:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:46:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 22:46:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:46:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:46:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:46:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 22:46:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,791 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 22:46:37,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:46:37,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240997558] [2021-12-06 22:46:37,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240997558] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:46:37,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233760860] [2021-12-06 22:46:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:46:37,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:46:37,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:46:37,792 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:46:37,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 22:46:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:46:37,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:46:37,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:46:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 22:46:38,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:46:38,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233760860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:46:38,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:46:38,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 22:46:38,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141668735] [2021-12-06 22:46:38,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:46:38,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:46:38,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:46:38,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:46:38,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:46:38,061 INFO L87 Difference]: Start difference. First operand 392891 states and 671894 transitions. Second operand has 5 states, 4 states have (on average 28.25) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:46:56,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:46:56,711 INFO L93 Difference]: Finished difference Result 394107 states and 673629 transitions. [2021-12-06 22:46:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:46:56,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.25) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 175 [2021-12-06 22:46:56,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:46:58,090 INFO L225 Difference]: With dead ends: 394107 [2021-12-06 22:46:58,091 INFO L226 Difference]: Without dead ends: 392903 [2021-12-06 22:46:58,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:46:58,204 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 7 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:46:58,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2126 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:46:58,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392903 states. [2021-12-06 22:47:22,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392903 to 392895. [2021-12-06 22:47:22,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392895 states, 331363 states have (on average 1.584941589736935) internal successors, (525191), 331210 states have internal predecessors, (525191), 61320 states have call successors, (61320), 172 states have call predecessors, (61320), 211 states have return successors, (85385), 61550 states have call predecessors, (85385), 61312 states have call successors, (85385) [2021-12-06 22:47:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392895 states to 392895 states and 671896 transitions. [2021-12-06 22:47:24,062 INFO L78 Accepts]: Start accepts. Automaton has 392895 states and 671896 transitions. Word has length 175 [2021-12-06 22:47:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:24,062 INFO L470 AbstractCegarLoop]: Abstraction has 392895 states and 671896 transitions. [2021-12-06 22:47:24,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.25) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 22:47:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 392895 states and 671896 transitions. [2021-12-06 22:47:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 22:47:24,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:24,761 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:24,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 22:47:24,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 22:47:24,964 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:24,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:24,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1528842239, now seen corresponding path program 1 times [2021-12-06 22:47:24,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:24,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769384944] [2021-12-06 22:47:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:24,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:47:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:47:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:47:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:47:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:47:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 22:47:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:47:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:47:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:47:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:47:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:47:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:47:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:47:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:47:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 22:47:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:47:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:47:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:47:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 22:47:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 22:47:25,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:25,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769384944] [2021-12-06 22:47:25,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769384944] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:25,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787946490] [2021-12-06 22:47:25,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:25,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:25,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:25,088 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:25,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 22:47:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:25,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 22:47:25,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 22:47:25,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 22:47:25,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787946490] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 22:47:25,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:47:25,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2021-12-06 22:47:25,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356615607] [2021-12-06 22:47:25,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:25,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:47:25,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:25,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:47:25,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:47:25,673 INFO L87 Difference]: Start difference. First operand 392895 states and 671896 transitions. Second operand has 9 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 4 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 22:47:45,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:45,797 INFO L93 Difference]: Finished difference Result 395499 states and 675639 transitions. [2021-12-06 22:47:45,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:47:45,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 4 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 175 [2021-12-06 22:47:45,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:47,256 INFO L225 Difference]: With dead ends: 395499 [2021-12-06 22:47:47,256 INFO L226 Difference]: Without dead ends: 394419 [2021-12-06 22:47:47,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 377 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:47:47,375 INFO L933 BasicCegarLoop]: 907 mSDtfsCounter, 865 mSDsluCounter, 4066 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:47,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 4973 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:47:47,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394419 states. [2021-12-06 22:48:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394419 to 393955. [2021-12-06 22:48:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393955 states, 332137 states have (on average 1.5844335319461547) internal successors, (526249), 332002 states have internal predecessors, (526249), 61532 states have call successors, (61532), 232 states have call predecessors, (61532), 285 states have return successors, (85643), 61770 states have call predecessors, (85643), 61520 states have call successors, (85643) [2021-12-06 22:48:13,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393955 states to 393955 states and 673424 transitions. [2021-12-06 22:48:13,683 INFO L78 Accepts]: Start accepts. Automaton has 393955 states and 673424 transitions. Word has length 175 [2021-12-06 22:48:13,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:48:13,683 INFO L470 AbstractCegarLoop]: Abstraction has 393955 states and 673424 transitions. [2021-12-06 22:48:13,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 4 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 22:48:13,684 INFO L276 IsEmpty]: Start isEmpty. Operand 393955 states and 673424 transitions. [2021-12-06 22:48:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-06 22:48:14,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:48:14,250 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:48:14,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 22:48:14,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 22:48:14,451 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:48:14,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:48:14,451 INFO L85 PathProgramCache]: Analyzing trace with hash -61131888, now seen corresponding path program 1 times [2021-12-06 22:48:14,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:48:14,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174855784] [2021-12-06 22:48:14,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:14,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:48:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:48:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:48:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:48:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:48:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:48:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 22:48:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:48:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:48:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:48:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:48:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:48:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:48:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:48:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:48:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:48:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:48:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:48:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 22:48:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:48:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:48:14,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:48:14,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174855784] [2021-12-06 22:48:14,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174855784] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:48:14,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034395510] [2021-12-06 22:48:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:48:14,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:48:14,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:48:14,537 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:48:14,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 22:48:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:48:14,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:48:14,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:48:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 22:48:14,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:48:14,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034395510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:48:14,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:48:14,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2021-12-06 22:48:14,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656997921] [2021-12-06 22:48:14,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:48:14,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:48:14,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:48:14,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:48:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:48:14,834 INFO L87 Difference]: Start difference. First operand 393955 states and 673424 transitions. Second operand has 10 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-06 22:48:34,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:48:34,809 INFO L93 Difference]: Finished difference Result 397605 states and 678736 transitions. [2021-12-06 22:48:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:48:34,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 176 [2021-12-06 22:48:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:48:36,185 INFO L225 Difference]: With dead ends: 397605 [2021-12-06 22:48:36,185 INFO L226 Difference]: Without dead ends: 393973 [2021-12-06 22:48:36,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-12-06 22:48:36,396 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 313 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:48:36,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 4717 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:48:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393973 states. [2021-12-06 22:49:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393973 to 393963. [2021-12-06 22:49:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393963 states, 332141 states have (on average 1.584426493567491) internal successors, (526253), 332010 states have internal predecessors, (526253), 61532 states have call successors, (61532), 232 states have call predecessors, (61532), 289 states have return successors, (85657), 61770 states have call predecessors, (85657), 61520 states have call successors, (85657) [2021-12-06 22:49:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393963 states to 393963 states and 673442 transitions. [2021-12-06 22:49:03,452 INFO L78 Accepts]: Start accepts. Automaton has 393963 states and 673442 transitions. Word has length 176 [2021-12-06 22:49:03,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:49:03,452 INFO L470 AbstractCegarLoop]: Abstraction has 393963 states and 673442 transitions. [2021-12-06 22:49:03,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-06 22:49:03,452 INFO L276 IsEmpty]: Start isEmpty. Operand 393963 states and 673442 transitions. [2021-12-06 22:49:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-06 22:49:04,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:49:04,024 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:04,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 22:49:04,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:04,225 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:49:04,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:49:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash 579587135, now seen corresponding path program 1 times [2021-12-06 22:49:04,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:49:04,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251073873] [2021-12-06 22:49:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:04,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:49:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:49:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:49:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:49:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 22:49:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:49:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 22:49:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:49:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:49:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:49:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:49:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:49:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:49:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:49:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:49:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:49:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:49:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:49:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 22:49:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:49:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:49:04,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:49:04,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251073873] [2021-12-06 22:49:04,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251073873] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:49:04,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830288310] [2021-12-06 22:49:04,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:49:04,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:49:04,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:49:04,339 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:49:04,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 22:49:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:49:04,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 22:49:04,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:49:04,689 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:49:04,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:49:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 22:49:04,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830288310] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:49:04,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:49:04,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2021-12-06 22:49:04,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598619005] [2021-12-06 22:49:04,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:49:04,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 22:49:04,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:49:04,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 22:49:04,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-12-06 22:49:04,909 INFO L87 Difference]: Start difference. First operand 393963 states and 673442 transitions. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 17 states have internal predecessors, (283), 5 states have call successors, (54), 10 states have call predecessors, (54), 10 states have return successors, (49), 7 states have call predecessors, (49), 5 states have call successors, (49) [2021-12-06 22:49:53,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:49:53,257 INFO L93 Difference]: Finished difference Result 985657 states and 1734202 transitions. [2021-12-06 22:49:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-06 22:49:53,258 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 17 states have internal predecessors, (283), 5 states have call successors, (54), 10 states have call predecessors, (54), 10 states have return successors, (49), 7 states have call predecessors, (49), 5 states have call successors, (49) Word has length 176 [2021-12-06 22:49:53,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:49:56,512 INFO L225 Difference]: With dead ends: 985657 [2021-12-06 22:49:56,512 INFO L226 Difference]: Without dead ends: 787173 [2021-12-06 22:49:57,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=819, Invalid=3341, Unknown=0, NotChecked=0, Total=4160 [2021-12-06 22:49:57,177 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 3749 mSDsluCounter, 3278 mSDsCounter, 0 mSdLazyCounter, 11096 mSolverCounterSat, 1943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 4057 SdHoareTripleChecker+Invalid, 13039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1943 IncrementalHoareTripleChecker+Valid, 11096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:49:57,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3772 Valid, 4057 Invalid, 13039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1943 Valid, 11096 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-06 22:49:57,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787173 states. [2021-12-06 22:50:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787173 to 777931. [2021-12-06 22:50:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777931 states, 655991 states have (on average 1.585059856004122) internal successors, (1039785), 655330 states have internal predecessors, (1039785), 121346 states have call successors, (121346), 460 states have call predecessors, (121346), 593 states have return successors, (194498), 122240 states have call predecessors, (194498), 121322 states have call successors, (194498) [2021-12-06 22:50:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777931 states to 777931 states and 1355629 transitions. [2021-12-06 22:50:54,914 INFO L78 Accepts]: Start accepts. Automaton has 777931 states and 1355629 transitions. Word has length 176 [2021-12-06 22:50:54,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:50:54,914 INFO L470 AbstractCegarLoop]: Abstraction has 777931 states and 1355629 transitions. [2021-12-06 22:50:54,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 17 states have internal predecessors, (283), 5 states have call successors, (54), 10 states have call predecessors, (54), 10 states have return successors, (49), 7 states have call predecessors, (49), 5 states have call successors, (49) [2021-12-06 22:50:54,915 INFO L276 IsEmpty]: Start isEmpty. Operand 777931 states and 1355629 transitions. [2021-12-06 22:50:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-06 22:50:56,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:50:56,340 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:50:56,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 22:50:56,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 22:50:56,543 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:50:56,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:50:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1712902637, now seen corresponding path program 1 times [2021-12-06 22:50:56,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:50:56,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736072687] [2021-12-06 22:50:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:50:56,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:50:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:50:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:50:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:50:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:50:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:50:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:50:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:50:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:50:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:50:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:50:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:50:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:50:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:50:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:50:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:50:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:50:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:50:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 22:50:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:50:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 22:50:56,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:50:56,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736072687] [2021-12-06 22:50:56,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736072687] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:50:56,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239762334] [2021-12-06 22:50:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:50:56,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:50:56,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:50:56,696 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:50:56,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1a0722-f5f6-4fc4-bbbc-9aa0163c258b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 22:50:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:50:56,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 22:50:56,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:50:57,041 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:50:57,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:50:57,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239762334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:50:57,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:50:57,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2021-12-06 22:50:57,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408940166] [2021-12-06 22:50:57,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:50:57,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:50:57,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:50:57,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:50:57,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2021-12-06 22:50:57,044 INFO L87 Difference]: Start difference. First operand 777931 states and 1355629 transitions. Second operand has 12 states, 10 states have (on average 12.3) internal successors, (123), 11 states have internal predecessors, (123), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2021-12-06 22:51:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:38,339 INFO L93 Difference]: Finished difference Result 783613 states and 1363675 transitions. [2021-12-06 22:51:38,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:51:38,340 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 12.3) internal successors, (123), 11 states have internal predecessors, (123), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) Word has length 176 [2021-12-06 22:51:38,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:41,534 INFO L225 Difference]: With dead ends: 783613 [2021-12-06 22:51:41,534 INFO L226 Difference]: Without dead ends: 777525 [2021-12-06 22:51:41,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-12-06 22:51:41,841 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 474 mSDsluCounter, 5124 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 5671 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:41,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 5671 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:51:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777525 states.