./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fabc9d8a61dd824da0c561a6d62c57fe8eb320f6ad8009599cd12699fa04e01c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:39:29,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:39:29,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:39:29,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:39:29,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:39:29,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:39:29,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:39:29,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:39:29,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:39:29,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:39:29,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:39:29,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:39:29,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:39:29,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:39:29,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:39:29,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:39:29,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:39:29,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:39:29,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:39:29,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:39:29,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:39:29,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:39:29,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:39:29,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:39:29,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:39:29,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:39:29,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:39:29,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:39:29,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:39:29,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:39:29,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:39:29,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:39:29,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:39:29,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:39:29,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:39:29,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:39:29,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:39:29,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:39:29,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:39:29,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:39:29,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:39:29,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 08:39:29,143 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:39:29,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:39:29,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:39:29,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:39:29,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:39:29,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:39:29,152 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:39:29,152 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 08:39:29,152 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 08:39:29,152 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 08:39:29,154 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 08:39:29,154 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 08:39:29,154 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 08:39:29,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:39:29,155 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:39:29,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:39:29,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:39:29,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 08:39:29,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 08:39:29,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 08:39:29,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:39:29,156 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 08:39:29,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:39:29,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 08:39:29,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:39:29,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:39:29,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:39:29,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:39:29,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:39:29,160 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 08:39:29,161 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fabc9d8a61dd824da0c561a6d62c57fe8eb320f6ad8009599cd12699fa04e01c [2021-10-28 08:39:29,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:39:29,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:39:29,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:39:29,475 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:39:29,476 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:39:29,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2021-10-28 08:39:29,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/data/cce0f8cd0/d0ad7066b9544d039a9335b91462ce10/FLAG0b4d6ac8d [2021-10-28 08:39:30,028 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:39:30,029 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2021-10-28 08:39:30,046 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/data/cce0f8cd0/d0ad7066b9544d039a9335b91462ce10/FLAG0b4d6ac8d [2021-10-28 08:39:30,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/data/cce0f8cd0/d0ad7066b9544d039a9335b91462ce10 [2021-10-28 08:39:30,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:39:30,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:39:30,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:39:30,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:39:30,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:39:30,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3df998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30, skipping insertion in model container [2021-10-28 08:39:30,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:39:30,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:39:30,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:39:30,694 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:39:30,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:39:30,735 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:39:30,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30 WrapperNode [2021-10-28 08:39:30,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:39:30,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:39:30,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:39:30,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:39:30,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:39:30,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:39:30,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:39:30,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:39:30,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:39:30,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:39:30,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:39:30,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:39:30,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30" (1/1) ... [2021-10-28 08:39:30,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:30,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:30,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:30,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 08:39:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:39:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:39:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:39:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:39:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:39:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:39:31,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:39:31,093 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 08:39:31,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:31 BoogieIcfgContainer [2021-10-28 08:39:31,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:39:31,096 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 08:39:31,097 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 08:39:31,100 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 08:39:31,101 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:39:31,101 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 08:39:30" (1/3) ... [2021-10-28 08:39:31,103 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bebe60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:39:31, skipping insertion in model container [2021-10-28 08:39:31,104 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:39:31,104 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:30" (2/3) ... [2021-10-28 08:39:31,104 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bebe60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:39:31, skipping insertion in model container [2021-10-28 08:39:31,105 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:39:31,105 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:31" (3/3) ... [2021-10-28 08:39:31,106 INFO L389 chiAutomizerObserver]: Analyzing ICFG NonTermination3-1.c [2021-10-28 08:39:31,153 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 08:39:31,153 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 08:39:31,153 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 08:39:31,153 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 08:39:31,154 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 08:39:31,154 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 08:39:31,154 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 08:39:31,154 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 08:39:31,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:31,188 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 08:39:31,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:31,189 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:31,195 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:39:31,195 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 08:39:31,195 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 08:39:31,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:31,198 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-28 08:39:31,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:31,198 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:31,199 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 08:39:31,199 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 08:39:31,205 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 9#L13-3true [2021-10-28 08:39:31,218 INFO L793 eck$LassoCheckResult]: Loop: 9#L13-3true assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 8#L13-2true main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 9#L13-3true [2021-10-28 08:39:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 08:39:31,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:31,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879334277] [2021-10-28 08:39:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:31,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:31,389 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:31,441 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:31,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:31,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-10-28 08:39:31,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:31,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750648443] [2021-10-28 08:39:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:31,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:31,470 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:31,489 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:31,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:31,497 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-10-28 08:39:31,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:31,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625056153] [2021-10-28 08:39:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:31,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:31,524 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:31,549 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:31,887 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:39:31,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:39:31,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:39:31,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:39:31,889 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:39:31,889 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:31,889 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:39:31,889 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:39:31,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: NonTermination3-1.c_Iteration1_Lasso [2021-10-28 08:39:31,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:39:31,890 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:39:31,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:39:31,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:39:31,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:39:31,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:39:31,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:39:31,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:39:31,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:39:31,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:39:31,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:39:31,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:39:32,223 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:39:32,238 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:39:32,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:32,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:32,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:32,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 08:39:32,262 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:32,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:32,272 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:39:32,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:32,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:32,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:32,275 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:39:32,275 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:39:32,285 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:39:32,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:32,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:32,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:32,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:32,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 08:39:32,329 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:32,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:32,339 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:39:32,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:32,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:32,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:32,340 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:39:32,340 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:39:32,352 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:39:32,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:32,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:32,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:32,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:32,410 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:32,419 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:32,420 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:39:32,420 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:32,420 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:32,420 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:32,421 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:39:32,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:39:32,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 08:39:32,423 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:39:32,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:32,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:32,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:32,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:32,459 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:32,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:32,468 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:39:32,469 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:32,469 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:32,469 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:32,470 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:39:32,470 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:39:32,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 08:39:32,484 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:39:32,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:32,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:32,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:32,514 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:32,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 08:39:32,515 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:32,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:32,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:32,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:32,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:32,535 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:39:32,535 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:39:32,547 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:39:32,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:32,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:32,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:32,582 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:32,593 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:32,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:32,602 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:39:32,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:32,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:32,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:32,604 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:39:32,604 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:39:32,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 08:39:32,622 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:39:32,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:32,658 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:32,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:32,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:32,665 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:32,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:32,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:32,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:32,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:32,678 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:39:32,678 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:39:32,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 08:39:32,698 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:39:32,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:32,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:32,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:32,734 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:32,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:32,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 08:39:32,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:32,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:32,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:32,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:32,752 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:39:32,752 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:39:32,768 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:39:32,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-28 08:39:32,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:32,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:32,792 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:32,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 08:39:32,796 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:32,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:32,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:32,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:32,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:32,808 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:39:32,809 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:39:32,834 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:39:32,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:32,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:32,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:32,860 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:32,883 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:32,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:32,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:39:32,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:32,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:32,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:32,894 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:39:32,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:39:32,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 08:39:32,910 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:39:32,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:32,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:32,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:32,946 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:32,951 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:32,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 08:39:32,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:32,959 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:39:32,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:32,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:32,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:32,960 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:39:32,961 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:39:32,974 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:39:33,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:33,002 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:33,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:33,003 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:33,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 08:39:33,007 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:39:33,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:39:33,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:39:33,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:39:33,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:39:33,020 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 08:39:33,020 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 08:39:33,057 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:39:33,091 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2021-10-28 08:39:33,091 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-10-28 08:39:33,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:39:33,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:33,099 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:33,104 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:39:33,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 08:39:33,118 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 08:39:33,118 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:39:33,118 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, v_rep(select #length ULTIMATE.start_main_~#a~0.base)_1) = -8*ULTIMATE.start_main_~n~0 + 19*v_rep(select #length ULTIMATE.start_main_~#a~0.base)_1 Supporting invariants [] [2021-10-28 08:39:33,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:33,142 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2021-10-28 08:39:33,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:33,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:39:33,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:33,210 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:39:33,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:33,283 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 08:39:33,284 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:33,348 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 37 transitions. Complement of second has 8 states. [2021-10-28 08:39:33,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:39:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-10-28 08:39:33,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-28 08:39:33,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:39:33,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 08:39:33,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:39:33,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 08:39:33,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:39:33,355 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 37 transitions. [2021-10-28 08:39:33,361 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:33,364 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 9 states and 12 transitions. [2021-10-28 08:39:33,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:39:33,365 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 08:39:33,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2021-10-28 08:39:33,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:39:33,366 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-10-28 08:39:33,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2021-10-28 08:39:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-10-28 08:39:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-10-28 08:39:33,391 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-28 08:39:33,391 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-28 08:39:33,391 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 08:39:33,391 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-10-28 08:39:33,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:33,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:33,393 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:33,393 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 08:39:33,393 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:39:33,393 INFO L791 eck$LassoCheckResult]: Stem: 83#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 84#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 87#L13-3 assume !(main_~n~0 < 10); 82#L17-4 [2021-10-28 08:39:33,394 INFO L793 eck$LassoCheckResult]: Loop: 82#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 80#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 81#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 82#L17-4 [2021-10-28 08:39:33,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:33,395 INFO L85 PathProgramCache]: Analyzing trace with hash 29861, now seen corresponding path program 1 times [2021-10-28 08:39:33,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:33,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642158349] [2021-10-28 08:39:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:33,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:33,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:33,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642158349] [2021-10-28 08:39:33,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642158349] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:33,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:33,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:39:33,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569142950] [2021-10-28 08:39:33,467 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:39:33,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 1 times [2021-10-28 08:39:33,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:33,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886407065] [2021-10-28 08:39:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:33,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:33,493 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:33,509 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:33,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:33,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:39:33,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:39:33,676 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:33,688 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2021-10-28 08:39:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:39:33,689 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2021-10-28 08:39:33,690 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:33,690 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 11 transitions. [2021-10-28 08:39:33,691 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:39:33,691 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 08:39:33,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2021-10-28 08:39:33,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:39:33,691 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-10-28 08:39:33,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2021-10-28 08:39:33,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-10-28 08:39:33,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2021-10-28 08:39:33,693 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-10-28 08:39:33,693 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-10-28 08:39:33,693 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 08:39:33,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2021-10-28 08:39:33,694 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:33,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:33,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:33,695 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 08:39:33,695 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:39:33,695 INFO L791 eck$LassoCheckResult]: Stem: 106#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 107#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 110#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 108#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 109#L13-3 assume !(main_~n~0 < 10); 105#L17-4 [2021-10-28 08:39:33,695 INFO L793 eck$LassoCheckResult]: Loop: 105#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 103#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 104#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 105#L17-4 [2021-10-28 08:39:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 28698723, now seen corresponding path program 1 times [2021-10-28 08:39:33,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:33,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714352933] [2021-10-28 08:39:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:33,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:33,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-10-28 08:39:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:33,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:33,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714352933] [2021-10-28 08:39:33,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714352933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:33,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436901737] [2021-10-28 08:39:33,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:33,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:39:33,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:33,769 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:39:33,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 08:39:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:33,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 08:39:33,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:33,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436901737] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:33,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:39:33,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-28 08:39:33,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34665158] [2021-10-28 08:39:33,847 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:39:33,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:33,848 INFO L85 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 2 times [2021-10-28 08:39:33,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:33,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847677757] [2021-10-28 08:39:33,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:33,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:33,856 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:33,873 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:34,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:34,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:39:34,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:39:34,019 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:34,034 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-10-28 08:39:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:39:34,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2021-10-28 08:39:34,036 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:34,036 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2021-10-28 08:39:34,036 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:39:34,037 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 08:39:34,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2021-10-28 08:39:34,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:39:34,037 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-28 08:39:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2021-10-28 08:39:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-10-28 08:39:34,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-28 08:39:34,039 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-28 08:39:34,039 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-28 08:39:34,039 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 08:39:34,039 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2021-10-28 08:39:34,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:34,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:34,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:34,041 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2021-10-28 08:39:34,041 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:39:34,041 INFO L791 eck$LassoCheckResult]: Stem: 145#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 146#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 149#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 147#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 148#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 150#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 151#L13-3 assume !(main_~n~0 < 10); 144#L17-4 [2021-10-28 08:39:34,041 INFO L793 eck$LassoCheckResult]: Loop: 144#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 142#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 143#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 144#L17-4 [2021-10-28 08:39:34,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1809671329, now seen corresponding path program 2 times [2021-10-28 08:39:34,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:34,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208672818] [2021-10-28 08:39:34,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:34,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:34,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:34,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208672818] [2021-10-28 08:39:34,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208672818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:34,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306103260] [2021-10-28 08:39:34,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:39:34,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:39:34,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:34,079 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:39:34,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 08:39:34,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:39:34,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:39:34,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:39:34,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:34,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306103260] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:34,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:39:34,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-28 08:39:34,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932220934] [2021-10-28 08:39:34,179 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:39:34,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 3 times [2021-10-28 08:39:34,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:34,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684262440] [2021-10-28 08:39:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:34,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:34,187 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:34,194 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:34,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:34,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:39:34,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:39:34,333 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:34,350 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-28 08:39:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:39:34,350 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2021-10-28 08:39:34,351 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:34,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 15 transitions. [2021-10-28 08:39:34,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:39:34,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 08:39:34,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2021-10-28 08:39:34,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:39:34,352 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-28 08:39:34,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2021-10-28 08:39:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-28 08:39:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-28 08:39:34,354 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-28 08:39:34,354 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-28 08:39:34,354 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 08:39:34,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2021-10-28 08:39:34,355 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:34,355 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:34,355 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:34,356 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1] [2021-10-28 08:39:34,356 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:39:34,356 INFO L791 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 196#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 199#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 197#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 198#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 200#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 203#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 202#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 201#L13-3 assume !(main_~n~0 < 10); 194#L17-4 [2021-10-28 08:39:34,356 INFO L793 eck$LassoCheckResult]: Loop: 194#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 192#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 193#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 194#L17-4 [2021-10-28 08:39:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:34,357 INFO L85 PathProgramCache]: Analyzing trace with hash -367605409, now seen corresponding path program 3 times [2021-10-28 08:39:34,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:34,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007160010] [2021-10-28 08:39:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:34,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:34,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:34,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007160010] [2021-10-28 08:39:34,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007160010] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:34,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234399167] [2021-10-28 08:39:34,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 08:39:34,400 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:39:34,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:34,407 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:39:34,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 08:39:34,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 08:39:34,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:39:34,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:39:34,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:34,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234399167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:34,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:39:34,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-28 08:39:34,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843098653] [2021-10-28 08:39:34,505 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:39:34,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:34,505 INFO L85 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 4 times [2021-10-28 08:39:34,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:34,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863834474] [2021-10-28 08:39:34,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:34,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:34,530 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:34,540 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:34,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:39:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:39:34,692 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:34,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:34,712 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-28 08:39:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:39:34,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2021-10-28 08:39:34,714 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:34,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 17 transitions. [2021-10-28 08:39:34,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:39:34,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 08:39:34,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2021-10-28 08:39:34,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:39:34,715 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-28 08:39:34,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2021-10-28 08:39:34,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-28 08:39:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-28 08:39:34,717 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 08:39:34,717 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 08:39:34,717 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 08:39:34,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2021-10-28 08:39:34,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:34,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:34,718 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:34,719 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1] [2021-10-28 08:39:34,719 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:39:34,719 INFO L791 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 257#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 260#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 261#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 262#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 258#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 259#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 266#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 265#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 264#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 263#L13-3 assume !(main_~n~0 < 10); 255#L17-4 [2021-10-28 08:39:34,719 INFO L793 eck$LassoCheckResult]: Loop: 255#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 253#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 254#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 255#L17-4 [2021-10-28 08:39:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1081477475, now seen corresponding path program 4 times [2021-10-28 08:39:34,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:34,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196249903] [2021-10-28 08:39:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:34,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:34,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:34,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196249903] [2021-10-28 08:39:34,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196249903] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:34,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212015051] [2021-10-28 08:39:34,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 08:39:34,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:39:34,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:34,768 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:39:34,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 08:39:34,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 08:39:34,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:39:34,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:39:34,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:34,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212015051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:34,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:39:34,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-28 08:39:34,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8001413] [2021-10-28 08:39:34,863 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:39:34,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:34,863 INFO L85 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 5 times [2021-10-28 08:39:34,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:34,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347445820] [2021-10-28 08:39:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:34,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:34,869 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:34,875 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:34,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:34,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:39:34,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:39:34,997 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. cyclomatic complexity: 4 Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:35,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:35,024 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-28 08:39:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:39:35,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2021-10-28 08:39:35,026 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:35,026 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 19 transitions. [2021-10-28 08:39:35,026 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:39:35,026 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 08:39:35,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2021-10-28 08:39:35,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:39:35,027 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-28 08:39:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2021-10-28 08:39:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-28 08:39:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-28 08:39:35,029 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-28 08:39:35,029 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-28 08:39:35,029 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 08:39:35,030 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2021-10-28 08:39:35,030 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:35,030 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:35,030 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:35,031 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1] [2021-10-28 08:39:35,031 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:39:35,031 INFO L791 eck$LassoCheckResult]: Stem: 328#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 329#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 332#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 333#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 334#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 330#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 331#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 340#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 339#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 338#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 337#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 336#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 335#L13-3 assume !(main_~n~0 < 10); 327#L17-4 [2021-10-28 08:39:35,032 INFO L793 eck$LassoCheckResult]: Loop: 327#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 325#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 326#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 327#L17-4 [2021-10-28 08:39:35,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:35,032 INFO L85 PathProgramCache]: Analyzing trace with hash 82234459, now seen corresponding path program 5 times [2021-10-28 08:39:35,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:35,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641721413] [2021-10-28 08:39:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:35,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:35,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:35,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641721413] [2021-10-28 08:39:35,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641721413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:35,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384068998] [2021-10-28 08:39:35,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 08:39:35,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:39:35,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:35,095 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:39:35,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 08:39:35,155 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 08:39:35,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:39:35,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:39:35,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:35,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384068998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:35,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:39:35,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-28 08:39:35,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006397592] [2021-10-28 08:39:35,207 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:39:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:35,208 INFO L85 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 6 times [2021-10-28 08:39:35,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:35,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489255681] [2021-10-28 08:39:35,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:35,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:35,214 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:35,220 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:35,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 08:39:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:39:35,351 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:35,391 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-10-28 08:39:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:39:35,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2021-10-28 08:39:35,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:35,394 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 21 transitions. [2021-10-28 08:39:35,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:39:35,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 08:39:35,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2021-10-28 08:39:35,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:39:35,395 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-28 08:39:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2021-10-28 08:39:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-10-28 08:39:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-28 08:39:35,397 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-28 08:39:35,397 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-28 08:39:35,397 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 08:39:35,398 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 20 transitions. [2021-10-28 08:39:35,399 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:35,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:35,400 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:35,400 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 1, 1, 1] [2021-10-28 08:39:35,400 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:39:35,401 INFO L791 eck$LassoCheckResult]: Stem: 411#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 412#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 415#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 416#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 417#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 413#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 414#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 425#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 424#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 423#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 422#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 421#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 420#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 419#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 418#L13-3 assume !(main_~n~0 < 10); 410#L17-4 [2021-10-28 08:39:35,401 INFO L793 eck$LassoCheckResult]: Loop: 410#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 408#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 409#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 410#L17-4 [2021-10-28 08:39:35,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1717906073, now seen corresponding path program 6 times [2021-10-28 08:39:35,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:35,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426541595] [2021-10-28 08:39:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:35,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:35,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:35,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426541595] [2021-10-28 08:39:35,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426541595] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:35,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875798377] [2021-10-28 08:39:35,471 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 08:39:35,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:39:35,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:35,474 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:39:35,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 08:39:35,550 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-28 08:39:35,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:39:35,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:39:35,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:35,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875798377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:35,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:39:35,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-28 08:39:35,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785809976] [2021-10-28 08:39:35,613 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:39:35,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:35,613 INFO L85 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 7 times [2021-10-28 08:39:35,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:35,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302312294] [2021-10-28 08:39:35,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:35,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:35,620 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:35,626 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:35,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:35,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:39:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:39:35,753 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. cyclomatic complexity: 4 Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:35,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:35,786 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-10-28 08:39:35,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:39:35,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 23 transitions. [2021-10-28 08:39:35,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:35,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 23 transitions. [2021-10-28 08:39:35,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:39:35,789 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 08:39:35,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 23 transitions. [2021-10-28 08:39:35,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:39:35,790 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-28 08:39:35,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 23 transitions. [2021-10-28 08:39:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-10-28 08:39:35,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.1) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-28 08:39:35,793 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-28 08:39:35,793 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-28 08:39:35,793 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 08:39:35,793 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 22 transitions. [2021-10-28 08:39:35,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:35,799 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:35,799 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:35,802 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 7, 1, 1, 1] [2021-10-28 08:39:35,802 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:39:35,802 INFO L791 eck$LassoCheckResult]: Stem: 505#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 506#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 509#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 510#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 511#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 507#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 508#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 521#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 520#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 519#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 518#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 517#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 516#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 515#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 514#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 513#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 512#L13-3 assume !(main_~n~0 < 10); 504#L17-4 [2021-10-28 08:39:35,803 INFO L793 eck$LassoCheckResult]: Loop: 504#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 502#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 503#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 504#L17-4 [2021-10-28 08:39:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:35,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1640296791, now seen corresponding path program 7 times [2021-10-28 08:39:35,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:35,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518076338] [2021-10-28 08:39:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:35,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:35,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:35,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518076338] [2021-10-28 08:39:35,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518076338] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:35,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428653869] [2021-10-28 08:39:35,924 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 08:39:35,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:39:35,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:35,926 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:39:35,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 08:39:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:35,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:39:36,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:36,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428653869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:36,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:39:36,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-28 08:39:36,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925742635] [2021-10-28 08:39:36,060 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:39:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:36,061 INFO L85 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 8 times [2021-10-28 08:39:36,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:36,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083270720] [2021-10-28 08:39:36,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:36,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:36,070 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:36,081 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:36,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 08:39:36,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:39:36,206 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:36,239 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-10-28 08:39:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:39:36,240 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 25 transitions. [2021-10-28 08:39:36,241 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:36,241 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 25 transitions. [2021-10-28 08:39:36,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:39:36,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 08:39:36,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 25 transitions. [2021-10-28 08:39:36,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:39:36,242 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-28 08:39:36,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 25 transitions. [2021-10-28 08:39:36,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-28 08:39:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-10-28 08:39:36,244 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-28 08:39:36,244 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-28 08:39:36,244 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 08:39:36,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 24 transitions. [2021-10-28 08:39:36,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:36,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:36,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:36,245 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 8, 1, 1, 1] [2021-10-28 08:39:36,245 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:39:36,245 INFO L791 eck$LassoCheckResult]: Stem: 610#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 611#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 614#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 615#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 616#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 612#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 613#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 628#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 627#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 626#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 625#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 624#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 623#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 622#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 621#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 620#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 619#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 618#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 617#L13-3 assume !(main_~n~0 < 10); 609#L17-4 [2021-10-28 08:39:36,245 INFO L793 eck$LassoCheckResult]: Loop: 609#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 607#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 608#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 609#L17-4 [2021-10-28 08:39:36,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash 72220821, now seen corresponding path program 8 times [2021-10-28 08:39:36,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:36,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139150864] [2021-10-28 08:39:36,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:36,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:36,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:36,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139150864] [2021-10-28 08:39:36,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139150864] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:36,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357077842] [2021-10-28 08:39:36,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:39:36,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:39:36,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:36,390 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:39:36,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 08:39:36,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:39:36,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:39:36,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 08:39:36,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:36,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357077842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:36,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:39:36,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-28 08:39:36,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840938256] [2021-10-28 08:39:36,545 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:39:36,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:36,545 INFO L85 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 9 times [2021-10-28 08:39:36,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:36,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389681822] [2021-10-28 08:39:36,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:36,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:36,554 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:36,569 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:36,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:36,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:39:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:39:36,699 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. cyclomatic complexity: 4 Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:36,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:36,744 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-28 08:39:36,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:39:36,745 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2021-10-28 08:39:36,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:36,746 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 25 states and 27 transitions. [2021-10-28 08:39:36,746 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:39:36,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 08:39:36,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 27 transitions. [2021-10-28 08:39:36,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:39:36,746 INFO L681 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-28 08:39:36,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 27 transitions. [2021-10-28 08:39:36,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-10-28 08:39:36,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-10-28 08:39:36,748 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-10-28 08:39:36,748 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-10-28 08:39:36,749 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 08:39:36,749 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 26 transitions. [2021-10-28 08:39:36,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:36,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:36,749 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:36,750 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 9, 1, 1, 1] [2021-10-28 08:39:36,750 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:39:36,750 INFO L791 eck$LassoCheckResult]: Stem: 726#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 727#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 730#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 731#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 732#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 728#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 729#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 746#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 745#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 744#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 743#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 742#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 741#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 740#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 739#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 738#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 737#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 736#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 735#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 734#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 733#L13-3 assume !(main_~n~0 < 10); 725#L17-4 [2021-10-28 08:39:36,750 INFO L793 eck$LassoCheckResult]: Loop: 725#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 723#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 724#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 725#L17-4 [2021-10-28 08:39:36,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:36,750 INFO L85 PathProgramCache]: Analyzing trace with hash 684734547, now seen corresponding path program 9 times [2021-10-28 08:39:36,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:36,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087519877] [2021-10-28 08:39:36,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:36,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:36,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:36,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087519877] [2021-10-28 08:39:36,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087519877] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:36,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877863888] [2021-10-28 08:39:36,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 08:39:36,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:39:36,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:36,888 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:39:36,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 08:39:37,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-28 08:39:37,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:39:37,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:39:37,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:37,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877863888] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:39:37,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:39:37,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-28 08:39:37,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793371733] [2021-10-28 08:39:37,097 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:39:37,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:37,097 INFO L85 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 10 times [2021-10-28 08:39:37,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:37,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880395874] [2021-10-28 08:39:37,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:37,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:37,103 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:37,108 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:37,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 08:39:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-28 08:39:37,219 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. cyclomatic complexity: 4 Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:37,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:37,260 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-10-28 08:39:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:39:37,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 28 transitions. [2021-10-28 08:39:37,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:37,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 26 states and 28 transitions. [2021-10-28 08:39:37,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 08:39:37,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 08:39:37,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 28 transitions. [2021-10-28 08:39:37,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:39:37,263 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-28 08:39:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 28 transitions. [2021-10-28 08:39:37,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-28 08:39:37,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:39:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-10-28 08:39:37,265 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-28 08:39:37,266 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-28 08:39:37,266 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 08:39:37,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 28 transitions. [2021-10-28 08:39:37,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:39:37,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:39:37,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:39:37,267 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1] [2021-10-28 08:39:37,268 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:39:37,268 INFO L791 eck$LassoCheckResult]: Stem: 852#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 853#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 856#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 857#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 858#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 854#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 855#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 874#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 873#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 872#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 871#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 870#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 869#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 868#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 867#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 866#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 865#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 864#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 863#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 862#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 861#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 860#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 859#L13-3 assume !(main_~n~0 < 10); 851#L17-4 [2021-10-28 08:39:37,268 INFO L793 eck$LassoCheckResult]: Loop: 851#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 849#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 850#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 851#L17-4 [2021-10-28 08:39:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash 899905681, now seen corresponding path program 10 times [2021-10-28 08:39:37,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:37,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440972363] [2021-10-28 08:39:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:37,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:37,282 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:37,305 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:37,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 11 times [2021-10-28 08:39:37,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:37,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482486079] [2021-10-28 08:39:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:37,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:37,312 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:37,316 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:37,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:37,317 INFO L85 PathProgramCache]: Analyzing trace with hash -95699990, now seen corresponding path program 1 times [2021-10-28 08:39:37,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:37,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855652737] [2021-10-28 08:39:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:37,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:37,382 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:37,419 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:41,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 08:39:41 BoogieIcfgContainer [2021-10-28 08:39:41,290 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 08:39:41,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:39:41,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:39:41,291 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:39:41,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:31" (3/4) ... [2021-10-28 08:39:41,294 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 08:39:41,341 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:39:41,341 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:39:41,342 INFO L168 Benchmark]: Toolchain (without parser) took 10907.92 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 53.3 MB in the beginning and 42.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:41,343 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 58.5 MB in the beginning and 58.5 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:39:41,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.69 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 53.0 MB in the beginning and 83.6 MB in the end (delta: -30.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:41,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.22 ms. Allocated memory is still 107.0 MB. Free memory was 83.6 MB in the beginning and 82.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:41,344 INFO L168 Benchmark]: Boogie Preprocessor took 34.46 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 80.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:39:41,345 INFO L168 Benchmark]: RCFGBuilder took 274.92 ms. Allocated memory is still 107.0 MB. Free memory was 80.9 MB in the beginning and 71.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:41,345 INFO L168 Benchmark]: BuchiAutomizer took 10193.91 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 71.6 MB in the beginning and 43.8 MB in the end (delta: 27.8 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:41,345 INFO L168 Benchmark]: Witness Printer took 50.25 ms. Allocated memory is still 130.0 MB. Free memory was 43.8 MB in the beginning and 42.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:39:41,347 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 58.5 MB in the beginning and 58.5 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.69 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 53.0 MB in the beginning and 83.6 MB in the end (delta: -30.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.22 ms. Allocated memory is still 107.0 MB. Free memory was 83.6 MB in the beginning and 82.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.46 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 80.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 274.92 ms. Allocated memory is still 107.0 MB. Free memory was 80.9 MB in the beginning and 71.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 10193.91 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 71.6 MB in the beginning and 43.8 MB in the end (delta: 27.8 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. * Witness Printer took 50.25 ms. Allocated memory is still 130.0 MB. Free memory was 43.8 MB in the beginning and 42.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (10 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function 19 * unknown-#length-unknown[a] + -8 * n and consists of 5 locations. 10 modules have a trivial ranking function, the largest among these consists of 13 locations. The remainder module has 26 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.1s and 12 iterations. TraceHistogramMax:10. Analysis of lassos took 9.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 11. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 26 states and ocurred in iteration 11. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 75 SDtfs, 62 SDslu, 131 SDs, 0 SdLazy, 180 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU10 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital88 mio100 ax100 hnf100 lsp93 ukn59 mio100 lsp69 div100 bol100 ite100 ukn100 eq152 hnf92 smp100 dnf100 smp100 tf100 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@70f190ee=0, NULL=0, \result=0, NULL=1, n=10, i=9, a=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78a6f1dd=9, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@274ba1ac=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11bb47d0=0, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c39de9b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@696d232d=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L10] int i = __VERIFIER_nondet_int(); [L11] int a[10]; [L13] int n = 0; [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND FALSE !(n < 10) Loop: [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] EXPR a[i] [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] COND TRUE 0 <= i && i < 10 && a[i] >= 0 [L18] i = __VERIFIER_nondet_int() [L20] a[i] = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 08:39:41,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:41,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:41,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:42,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:42,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:42,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:42,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:42,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:43,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-28 08:39:43,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f2ee563-da19-4306-8072-cb40c08a5251/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...