./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/reducercommutativity/sum10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/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_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/reducercommutativity/sum10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/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 32bit --witnessprinter.graph.data.programhash f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:59:17,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:59:17,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:59:17,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:59:17,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:59:17,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:59:17,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:59:17,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:59:17,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:59:17,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:59:17,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:59:17,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:59:17,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:59:17,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:59:17,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:59:17,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:59:17,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:59:17,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:59:17,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:59:17,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:59:17,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:59:17,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:59:17,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:59:17,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:59:17,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:59:17,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:59:17,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:59:17,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:59:17,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:59:17,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:59:17,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:59:17,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:59:17,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:59:17,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:59:17,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:59:17,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:59:17,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:59:17,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:59:17,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:59:17,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:59:17,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:59:17,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:59:17,599 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:59:17,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:59:17,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:59:17,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:59:17,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:59:17,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:59:17,604 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:59:17,604 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:59:17,604 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:59:17,604 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:59:17,606 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:59:17,606 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:59:17,607 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:59:17,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:59:17,607 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:59:17,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:59:17,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:59:17,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:59:17,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:59:17,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:59:17,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:59:17,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:59:17,610 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:59:17,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:59:17,610 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:59:17,611 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:59:17,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:59:17,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:59:17,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:59:17,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:59:17,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:59:17,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:59:17,615 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:59:17,616 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_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 [2021-10-28 09:59:17,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:59:17,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:59:17,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:59:17,996 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:59:17,998 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:59:17,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/reducercommutativity/sum10-1.i [2021-10-28 09:59:18,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/data/eb74b2dee/f965df6e04e744108071d289d601175c/FLAG47a0cc309 [2021-10-28 09:59:18,647 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:59:18,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/sv-benchmarks/c/reducercommutativity/sum10-1.i [2021-10-28 09:59:18,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/data/eb74b2dee/f965df6e04e744108071d289d601175c/FLAG47a0cc309 [2021-10-28 09:59:19,004 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/data/eb74b2dee/f965df6e04e744108071d289d601175c [2021-10-28 09:59:19,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:59:19,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:59:19,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:59:19,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:59:19,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:59:19,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ed6d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19, skipping insertion in model container [2021-10-28 09:59:19,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:59:19,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:59:19,302 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2021-10-28 09:59:19,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:59:19,319 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:59:19,368 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2021-10-28 09:59:19,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:59:19,396 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:59:19,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19 WrapperNode [2021-10-28 09:59:19,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:59:19,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:59:19,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:59:19,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:59:19,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:59:19,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:59:19,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:59:19,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:59:19,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:59:19,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:59:19,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:59:19,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:59:19,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19" (1/1) ... [2021-10-28 09:59:19,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:19,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:19,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:19,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:59:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:59:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:59:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:59:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:59:19,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:59:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:59:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:59:19,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:59:19,934 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-28 09:59:19,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:59:19 BoogieIcfgContainer [2021-10-28 09:59:19,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:59:19,937 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:59:19,938 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:59:19,942 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:59:19,943 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:59:19,943 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:59:19" (1/3) ... [2021-10-28 09:59:19,945 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@232f00c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:59:19, skipping insertion in model container [2021-10-28 09:59:19,945 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:59:19,946 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:59:19" (2/3) ... [2021-10-28 09:59:19,946 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@232f00c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:59:19, skipping insertion in model container [2021-10-28 09:59:19,946 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:59:19,947 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:59:19" (3/3) ... [2021-10-28 09:59:19,948 INFO L389 chiAutomizerObserver]: Analyzing ICFG sum10-1.i [2021-10-28 09:59:20,005 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:59:20,006 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:59:20,006 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:59:20,006 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:59:20,006 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:59:20,007 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:59:20,007 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:59:20,007 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:59:20,026 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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 09:59:20,070 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2021-10-28 09:59:20,070 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:20,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:20,077 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:59:20,078 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:20,078 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:59:20,078 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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 09:59:20,099 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2021-10-28 09:59:20,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:20,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:20,100 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:59:20,100 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:20,108 INFO L791 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 8#L-1true havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 15#L34-3true [2021-10-28 09:59:20,109 INFO L793 eck$LassoCheckResult]: Loop: 15#L34-3true assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 11#L34-2true main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 15#L34-3true [2021-10-28 09:59:20,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:20,132 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 09:59:20,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:20,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955964893] [2021-10-28 09:59:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:20,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:20,365 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:20,454 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:20,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-10-28 09:59:20,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:20,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284305492] [2021-10-28 09:59:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:20,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:20,483 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:20,505 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:20,513 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-10-28 09:59:20,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:20,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680347345] [2021-10-28 09:59:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:20,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:20,565 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:20,619 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:21,337 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:59:21,338 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:59:21,338 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:59:21,339 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:59:21,339 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:59:21,339 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:21,340 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:59:21,340 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:59:21,340 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum10-1.i_Iteration1_Lasso [2021-10-28 09:59:21,341 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:59:21,341 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:59:21,373 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 09:59:21,380 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 09:59:21,384 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 09:59:21,387 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 09:59:21,392 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 09:59:21,395 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 09:59:21,398 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 09:59:21,401 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 09:59:21,406 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 09:59:21,411 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 09:59:21,651 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 09:59:21,662 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 09:59:21,666 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 09:59:21,670 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 09:59:21,673 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 09:59:21,677 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 09:59:21,680 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 09:59:21,684 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 09:59:21,689 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 09:59:22,045 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:59:22,051 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:59:22,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,068 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 09:59:22,080 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,080 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:22,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,081 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,086 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:22,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:22,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:59:22,093 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:22,135 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:59:22,139 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 09:59:22,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:22,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:22,154 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:22,176 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:22,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:59:22,233 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 09:59:22,243 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,243 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:22,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:22,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:22,260 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:22,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,307 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,314 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 09:59:22,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,331 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:22,332 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:22,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:59:22,356 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:22,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,405 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,414 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 09:59:22,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:59:22,425 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,425 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:22,425 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,425 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,425 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,426 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:22,426 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:22,438 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-28 09:59:22,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:59:22,469 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 09:59:22,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,479 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:22,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:22,480 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:22,482 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-10-28 09:59:22,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,508 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:59:22,510 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 09:59:22,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:22,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,521 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:22,521 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:22,523 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:22,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,553 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:59:22,560 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 09:59:22,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,573 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:22,574 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:22,595 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:22,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,624 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:59:22,627 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 09:59:22,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,639 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:22,639 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:22,661 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-28 09:59:22,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,687 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:59:22,692 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 09:59:22,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,699 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,699 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,702 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:22,702 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:22,716 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:22,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,740 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:59:22,757 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 09:59:22,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:22,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:22,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:22,795 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-10-28 09:59:22,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,823 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:59:22,825 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 09:59:22,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,841 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:22,841 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:22,860 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:22,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,905 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,918 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 09:59:22,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,932 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:22,932 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:22,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 09:59:22,950 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:22,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:22,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:22,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:22,977 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:22,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:59:22,980 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 09:59:22,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:22,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:22,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:22,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:22,992 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:22,993 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:23,006 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:23,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:23,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:23,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:23,032 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:23,034 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 09:59:23,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:59:23,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:23,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:23,043 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:23,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:23,049 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:23,049 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:23,083 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:59:23,143 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2021-10-28 09:59:23,143 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-10-28 09:59:23,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:23,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:23,157 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:23,163 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:59:23,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:59:23,187 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 09:59:23,187 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:59:23,188 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1, v_rep(select #length ULTIMATE.start_main_~#x~0.base)_1) = -8*ULTIMATE.start_main_~i~1 + 19*v_rep(select #length ULTIMATE.start_main_~#x~0.base)_1 Supporting invariants [] [2021-10-28 09:59:23,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:23,332 INFO L297 tatePredicateManager]: 7 out of 7 supporting invariants were superfluous and have been removed [2021-10-28 09:59:23,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:23,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:59:23,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:23,448 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:59:23,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:23,502 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 09:59:23,521 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 09:59:23,523 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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 09:59:23,659 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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 66 states and 92 transitions. Complement of second has 8 states. [2021-10-28 09:59:23,660 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 09:59:23,662 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 09:59:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2021-10-28 09:59:23,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 61 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-28 09:59:23,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:59:23,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 61 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 09:59:23,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:59:23,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 61 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 09:59:23,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:59:23,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 92 transitions. [2021-10-28 09:59:23,672 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:23,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 19 states and 24 transitions. [2021-10-28 09:59:23,678 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-28 09:59:23,678 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:59:23,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 24 transitions. [2021-10-28 09:59:23,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:23,679 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-28 09:59:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 24 transitions. [2021-10-28 09:59:23,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-28 09:59:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 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 09:59:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-10-28 09:59:23,706 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-28 09:59:23,706 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-28 09:59:23,706 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:59:23,706 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 24 transitions. [2021-10-28 09:59:23,707 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:23,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:23,708 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:23,708 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 09:59:23,708 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:23,708 INFO L791 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 160#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 171#L34-3 assume !(main_~i~1 < 10); 163#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 164#L20-3 [2021-10-28 09:59:23,709 INFO L793 eck$LassoCheckResult]: Loop: 164#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 177#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 164#L20-3 [2021-10-28 09:59:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:23,709 INFO L85 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2021-10-28 09:59:23,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:23,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868624289] [2021-10-28 09:59:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:23,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:23,761 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 09:59:23,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:23,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868624289] [2021-10-28 09:59:23,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868624289] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:23,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:23,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:59:23,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783681669] [2021-10-28 09:59:23,766 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:23,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:23,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 1 times [2021-10-28 09:59:23,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:23,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300536693] [2021-10-28 09:59:23,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:23,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:23,774 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:23,781 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:23,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:23,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:59:23,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:59:23,839 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. cyclomatic complexity: 10 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 09:59:23,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:23,852 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-10-28 09:59:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:59:23,853 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 24 transitions. [2021-10-28 09:59:23,854 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:23,855 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 20 states and 24 transitions. [2021-10-28 09:59:23,855 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:59:23,855 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:59:23,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2021-10-28 09:59:23,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:23,856 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-10-28 09:59:23,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2021-10-28 09:59:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-10-28 09:59:23,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 states have internal predecessors, (23), 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 09:59:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-28 09:59:23,859 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-28 09:59:23,859 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-28 09:59:23,859 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:59:23,859 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 23 transitions. [2021-10-28 09:59:23,860 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:23,860 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:23,860 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:23,860 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:59:23,860 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:23,861 INFO L791 eck$LassoCheckResult]: Stem: 206#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 207#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 216#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 219#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 220#L34-3 assume !(main_~i~1 < 10); 208#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 209#L20-3 [2021-10-28 09:59:23,861 INFO L793 eck$LassoCheckResult]: Loop: 209#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 222#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 209#L20-3 [2021-10-28 09:59:23,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2021-10-28 09:59:23,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:23,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088311282] [2021-10-28 09:59:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:23,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:23,916 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 09:59:23,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:23,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088311282] [2021-10-28 09:59:23,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088311282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:23,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471391012] [2021-10-28 09:59:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:23,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:23,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:23,920 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:23,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:59:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:24,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:59:24,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:24,050 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 09:59:24,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471391012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:24,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:24,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-28 09:59:24,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537247703] [2021-10-28 09:59:24,052 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:24,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:24,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 2 times [2021-10-28 09:59:24,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:24,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736637280] [2021-10-28 09:59:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:24,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:24,060 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:24,066 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:24,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:59:24,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:59:24,114 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 09:59:24,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:24,136 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-10-28 09:59:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:59:24,136 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 26 transitions. [2021-10-28 09:59:24,140 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:24,146 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 26 transitions. [2021-10-28 09:59:24,146 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:59:24,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:59:24,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2021-10-28 09:59:24,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:24,147 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-28 09:59:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2021-10-28 09:59:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-10-28 09:59:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 20 states have internal predecessors, (25), 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 09:59:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-28 09:59:24,156 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-28 09:59:24,156 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-28 09:59:24,156 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:59:24,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 25 transitions. [2021-10-28 09:59:24,159 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:24,159 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:24,159 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:24,160 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-28 09:59:24,160 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:24,160 INFO L791 eck$LassoCheckResult]: Stem: 270#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 271#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 280#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 287#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 288#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 283#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 284#L34-3 assume !(main_~i~1 < 10); 272#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 273#L20-3 [2021-10-28 09:59:24,160 INFO L793 eck$LassoCheckResult]: Loop: 273#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 286#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 273#L20-3 [2021-10-28 09:59:24,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:24,161 INFO L85 PathProgramCache]: Analyzing trace with hash 265236367, now seen corresponding path program 2 times [2021-10-28 09:59:24,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:24,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122047777] [2021-10-28 09:59:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:24,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:24,246 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 09:59:24,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:24,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122047777] [2021-10-28 09:59:24,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122047777] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:24,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445542052] [2021-10-28 09:59:24,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:59:24,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:24,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:24,270 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:24,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 09:59:24,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:59:24,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:24,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:59:24,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:24,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:24,389 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 09:59:24,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445542052] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:24,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:24,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-28 09:59:24,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30816613] [2021-10-28 09:59:24,391 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:24,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:24,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 3 times [2021-10-28 09:59:24,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:24,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668021350] [2021-10-28 09:59:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:24,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:24,408 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:24,421 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:24,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:24,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:59:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:59:24,490 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. cyclomatic complexity: 9 Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 09:59:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:24,524 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-10-28 09:59:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:59:24,525 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 28 transitions. [2021-10-28 09:59:24,528 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:24,530 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 28 transitions. [2021-10-28 09:59:24,530 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:59:24,530 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:59:24,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2021-10-28 09:59:24,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:24,531 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-28 09:59:24,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2021-10-28 09:59:24,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-28 09:59:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 states have internal predecessors, (27), 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 09:59:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-10-28 09:59:24,535 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-10-28 09:59:24,535 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-10-28 09:59:24,535 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:59:24,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2021-10-28 09:59:24,539 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:24,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:24,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:24,540 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1] [2021-10-28 09:59:24,540 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:24,540 INFO L791 eck$LassoCheckResult]: Stem: 345#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 346#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 355#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 362#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 363#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 358#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 359#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 365#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 364#L34-3 assume !(main_~i~1 < 10); 347#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 348#L20-3 [2021-10-28 09:59:24,541 INFO L793 eck$LassoCheckResult]: Loop: 348#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 361#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 348#L20-3 [2021-10-28 09:59:24,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:24,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1489134225, now seen corresponding path program 3 times [2021-10-28 09:59:24,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:24,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560383280] [2021-10-28 09:59:24,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:24,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:24,641 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 09:59:24,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:24,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560383280] [2021-10-28 09:59:24,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560383280] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:24,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769005205] [2021-10-28 09:59:24,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:59:24,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:24,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:24,644 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:24,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 09:59:24,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 09:59:24,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:24,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:59:24,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:24,772 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 09:59:24,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769005205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:24,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:24,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-28 09:59:24,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14977312] [2021-10-28 09:59:24,774 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:24,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:24,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 4 times [2021-10-28 09:59:24,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:24,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056210665] [2021-10-28 09:59:24,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:24,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:24,780 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:24,785 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:24,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:24,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:59:24,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:59:24,833 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. cyclomatic complexity: 9 Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 09:59:24,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:24,866 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-10-28 09:59:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:59:24,867 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 30 transitions. [2021-10-28 09:59:24,868 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:24,869 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 26 states and 30 transitions. [2021-10-28 09:59:24,869 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:59:24,870 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:59:24,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 30 transitions. [2021-10-28 09:59:24,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:24,870 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-28 09:59:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 30 transitions. [2021-10-28 09:59:24,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-10-28 09:59:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 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 09:59:24,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-10-28 09:59:24,876 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-28 09:59:24,876 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-28 09:59:24,876 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:59:24,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 29 transitions. [2021-10-28 09:59:24,878 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:24,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:24,879 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:24,880 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2021-10-28 09:59:24,880 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:24,880 INFO L791 eck$LassoCheckResult]: Stem: 429#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 430#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 441#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 448#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 449#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 444#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 445#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 453#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 452#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 451#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 450#L34-3 assume !(main_~i~1 < 10); 433#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 434#L20-3 [2021-10-28 09:59:24,880 INFO L793 eck$LassoCheckResult]: Loop: 434#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 447#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 434#L20-3 [2021-10-28 09:59:24,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:24,881 INFO L85 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 4 times [2021-10-28 09:59:24,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:24,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845412918] [2021-10-28 09:59:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:24,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:24,991 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 09:59:24,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:24,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845412918] [2021-10-28 09:59:24,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845412918] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:24,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754444862] [2021-10-28 09:59:24,992 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:59:24,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:24,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:24,996 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:25,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 09:59:25,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:59:25,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:25,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:59:25,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:25,134 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 09:59:25,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754444862] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:25,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:25,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-28 09:59:25,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420832608] [2021-10-28 09:59:25,143 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:25,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 5 times [2021-10-28 09:59:25,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:25,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200346464] [2021-10-28 09:59:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:25,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:25,159 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:25,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:25,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:59:25,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:59:25,218 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. cyclomatic complexity: 9 Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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 09:59:25,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:25,249 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-10-28 09:59:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:59:25,250 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 32 transitions. [2021-10-28 09:59:25,251 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:25,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 32 transitions. [2021-10-28 09:59:25,254 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:59:25,254 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:59:25,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 32 transitions. [2021-10-28 09:59:25,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:25,255 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-28 09:59:25,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 32 transitions. [2021-10-28 09:59:25,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-28 09:59:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 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 09:59:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-28 09:59:25,265 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-28 09:59:25,266 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-28 09:59:25,266 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:59:25,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 31 transitions. [2021-10-28 09:59:25,267 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:25,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:25,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:25,268 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1] [2021-10-28 09:59:25,268 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:25,270 INFO L791 eck$LassoCheckResult]: Stem: 528#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 529#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 538#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 545#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 546#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 541#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 542#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 552#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 551#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 550#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 549#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 548#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 547#L34-3 assume !(main_~i~1 < 10); 530#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 531#L20-3 [2021-10-28 09:59:25,270 INFO L793 eck$LassoCheckResult]: Loop: 531#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 544#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 531#L20-3 [2021-10-28 09:59:25,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:25,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1745699051, now seen corresponding path program 5 times [2021-10-28 09:59:25,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:25,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639940427] [2021-10-28 09:59:25,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:25,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:25,399 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 09:59:25,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:25,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639940427] [2021-10-28 09:59:25,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639940427] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:25,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004081432] [2021-10-28 09:59:25,400 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:59:25,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:25,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:25,404 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:25,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:59:25,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 09:59:25,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:25,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:59:25,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:25,584 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 09:59:25,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004081432] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:25,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:25,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-28 09:59:25,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352079719] [2021-10-28 09:59:25,587 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:25,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:25,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 6 times [2021-10-28 09:59:25,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:25,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677360044] [2021-10-28 09:59:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:25,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:25,595 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:25,602 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:25,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:25,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:59:25,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:59:25,653 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. cyclomatic complexity: 9 Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 09:59:25,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:25,687 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-10-28 09:59:25,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:59:25,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 34 transitions. [2021-10-28 09:59:25,690 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:25,691 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 34 transitions. [2021-10-28 09:59:25,691 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:59:25,691 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:59:25,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 34 transitions. [2021-10-28 09:59:25,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:25,692 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-10-28 09:59:25,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 34 transitions. [2021-10-28 09:59:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-10-28 09:59:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 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 09:59:25,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-10-28 09:59:25,699 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-28 09:59:25,699 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-28 09:59:25,700 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 09:59:25,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 33 transitions. [2021-10-28 09:59:25,700 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:25,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:25,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:25,702 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 1, 1, 1, 1] [2021-10-28 09:59:25,702 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:25,702 INFO L791 eck$LassoCheckResult]: Stem: 634#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 635#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 646#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 653#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 654#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 649#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 650#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 662#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 661#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 660#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 659#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 658#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 657#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 656#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 655#L34-3 assume !(main_~i~1 < 10); 638#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 639#L20-3 [2021-10-28 09:59:25,702 INFO L793 eck$LassoCheckResult]: Loop: 639#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 652#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 639#L20-3 [2021-10-28 09:59:25,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:25,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1715480727, now seen corresponding path program 6 times [2021-10-28 09:59:25,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:25,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294808456] [2021-10-28 09:59:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:25,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:25,812 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 09:59:25,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:25,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294808456] [2021-10-28 09:59:25,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294808456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:25,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138152464] [2021-10-28 09:59:25,814 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:59:25,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:25,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:25,818 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:25,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 09:59:25,930 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-28 09:59:25,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:25,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:59:25,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:26,010 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 09:59:26,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138152464] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:26,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:26,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-28 09:59:26,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485606083] [2021-10-28 09:59:26,013 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:26,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:26,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 7 times [2021-10-28 09:59:26,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:26,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117705025] [2021-10-28 09:59:26,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:26,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:26,023 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:26,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:26,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:26,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:59:26,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:59:26,096 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. cyclomatic complexity: 9 Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 09:59:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:26,134 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-10-28 09:59:26,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:59:26,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 36 transitions. [2021-10-28 09:59:26,135 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:26,136 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 32 states and 36 transitions. [2021-10-28 09:59:26,136 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:59:26,136 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:59:26,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 36 transitions. [2021-10-28 09:59:26,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:26,137 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-10-28 09:59:26,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 36 transitions. [2021-10-28 09:59:26,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-28 09:59:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 30 states have internal predecessors, (35), 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 09:59:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-10-28 09:59:26,139 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-28 09:59:26,139 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-28 09:59:26,139 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 09:59:26,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 35 transitions. [2021-10-28 09:59:26,140 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:26,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:26,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:26,141 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 7, 1, 1, 1, 1] [2021-10-28 09:59:26,142 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:26,142 INFO L791 eck$LassoCheckResult]: Stem: 753#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 754#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 765#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 772#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 773#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 768#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 769#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 783#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 782#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 781#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 780#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 779#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 778#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 777#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 776#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 775#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 774#L34-3 assume !(main_~i~1 < 10); 757#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 758#L20-3 [2021-10-28 09:59:26,142 INFO L793 eck$LassoCheckResult]: Loop: 758#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 771#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 758#L20-3 [2021-10-28 09:59:26,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:26,143 INFO L85 PathProgramCache]: Analyzing trace with hash -690407015, now seen corresponding path program 7 times [2021-10-28 09:59:26,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:26,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641384191] [2021-10-28 09:59:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:26,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,241 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 09:59:26,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:26,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641384191] [2021-10-28 09:59:26,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641384191] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:26,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414587157] [2021-10-28 09:59:26,243 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:59:26,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:26,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:26,246 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:26,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 09:59:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:59:26,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:26,425 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 09:59:26,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414587157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:26,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:26,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-28 09:59:26,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868167943] [2021-10-28 09:59:26,428 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:26,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:26,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 8 times [2021-10-28 09:59:26,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:26,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184707625] [2021-10-28 09:59:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:26,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:26,436 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:26,454 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:26,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:26,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:59:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:59:26,508 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. cyclomatic complexity: 9 Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 09:59:26,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:26,558 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-10-28 09:59:26,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:59:26,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 38 transitions. [2021-10-28 09:59:26,560 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:26,563 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 38 transitions. [2021-10-28 09:59:26,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:59:26,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:59:26,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 38 transitions. [2021-10-28 09:59:26,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:26,564 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-10-28 09:59:26,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 38 transitions. [2021-10-28 09:59:26,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-28 09:59:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.121212121212121) internal successors, (37), 32 states have internal predecessors, (37), 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 09:59:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-28 09:59:26,568 INFO L704 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-28 09:59:26,568 INFO L587 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-28 09:59:26,568 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 09:59:26,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 37 transitions. [2021-10-28 09:59:26,569 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:26,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:26,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:26,570 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 8, 1, 1, 1, 1] [2021-10-28 09:59:26,570 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:26,570 INFO L791 eck$LassoCheckResult]: Stem: 883#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 884#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 895#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 902#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 903#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 898#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 899#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 915#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 914#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 913#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 912#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 911#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 910#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 909#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 908#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 907#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 906#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 905#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 904#L34-3 assume !(main_~i~1 < 10); 887#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 888#L20-3 [2021-10-28 09:59:26,571 INFO L793 eck$LassoCheckResult]: Loop: 888#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 901#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 888#L20-3 [2021-10-28 09:59:26,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:26,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2056121829, now seen corresponding path program 8 times [2021-10-28 09:59:26,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:26,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233409901] [2021-10-28 09:59:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:26,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,679 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 09:59:26,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:26,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233409901] [2021-10-28 09:59:26,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233409901] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:26,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064687015] [2021-10-28 09:59:26,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:59:26,681 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:26,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:26,685 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:26,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 09:59:26,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:59:26,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:26,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:59:26,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:26,888 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 09:59:26,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064687015] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:26,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:26,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-28 09:59:26,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110300477] [2021-10-28 09:59:26,890 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:26,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 9 times [2021-10-28 09:59:26,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:26,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18275775] [2021-10-28 09:59:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:26,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:26,896 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:26,900 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:26,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:26,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:59:26,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:59:26,977 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. cyclomatic complexity: 9 Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 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 09:59:27,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:27,019 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-10-28 09:59:27,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:59:27,020 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 40 transitions. [2021-10-28 09:59:27,021 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:27,021 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 40 transitions. [2021-10-28 09:59:27,021 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:59:27,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:59:27,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 40 transitions. [2021-10-28 09:59:27,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:27,022 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-28 09:59:27,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 40 transitions. [2021-10-28 09:59:27,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-10-28 09:59:27,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 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 09:59:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-28 09:59:27,025 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-28 09:59:27,025 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-28 09:59:27,025 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 09:59:27,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 39 transitions. [2021-10-28 09:59:27,025 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:27,025 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:27,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:27,026 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 9, 1, 1, 1, 1] [2021-10-28 09:59:27,026 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:27,026 INFO L791 eck$LassoCheckResult]: Stem: 1024#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1025#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1036#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1043#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1044#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1039#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1040#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1058#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1057#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1056#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1055#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1054#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1053#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1052#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1051#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1050#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1049#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1048#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1047#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1046#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1045#L34-3 assume !(main_~i~1 < 10); 1028#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1029#L20-3 [2021-10-28 09:59:27,027 INFO L793 eck$LassoCheckResult]: Loop: 1029#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1042#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1029#L20-3 [2021-10-28 09:59:27,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:27,027 INFO L85 PathProgramCache]: Analyzing trace with hash -248065507, now seen corresponding path program 9 times [2021-10-28 09:59:27,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:27,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205292773] [2021-10-28 09:59:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:27,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:27,131 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 09:59:27,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:27,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205292773] [2021-10-28 09:59:27,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205292773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:27,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180446365] [2021-10-28 09:59:27,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:59:27,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:27,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:27,137 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:27,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 09:59:27,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-28 09:59:27,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:27,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:59:27,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:27,420 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 09:59:27,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180446365] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:27,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:27,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-28 09:59:27,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995409139] [2021-10-28 09:59:27,422 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:27,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 10 times [2021-10-28 09:59:27,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:27,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787981813] [2021-10-28 09:59:27,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:27,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:27,428 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:27,432 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:27,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:59:27,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:59:27,484 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. cyclomatic complexity: 9 Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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 09:59:27,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:27,554 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-10-28 09:59:27,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:59:27,554 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 41 transitions. [2021-10-28 09:59:27,556 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:27,556 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 37 states and 41 transitions. [2021-10-28 09:59:27,557 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 09:59:27,557 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:59:27,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 41 transitions. [2021-10-28 09:59:27,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:27,558 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-28 09:59:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 41 transitions. [2021-10-28 09:59:27,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-28 09:59:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 36 states have internal predecessors, (41), 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 09:59:27,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-10-28 09:59:27,565 INFO L704 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-28 09:59:27,565 INFO L587 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-28 09:59:27,565 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 09:59:27,565 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 41 transitions. [2021-10-28 09:59:27,567 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-28 09:59:27,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:27,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:27,568 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1] [2021-10-28 09:59:27,568 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:27,568 INFO L791 eck$LassoCheckResult]: Stem: 1177#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1178#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1187#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1194#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1195#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1190#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1191#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1211#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1210#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1209#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1208#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1207#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1206#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1205#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1204#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1203#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1202#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1201#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1200#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1199#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1198#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1197#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1196#L34-3 assume !(main_~i~1 < 10); 1179#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1180#L20-3 [2021-10-28 09:59:27,569 INFO L793 eck$LassoCheckResult]: Loop: 1180#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1193#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1180#L20-3 [2021-10-28 09:59:27,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:27,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2127272351, now seen corresponding path program 10 times [2021-10-28 09:59:27,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:27,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692228671] [2021-10-28 09:59:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:27,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:27,601 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:27,637 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 11 times [2021-10-28 09:59:27,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:27,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042062132] [2021-10-28 09:59:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:27,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:27,642 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:27,650 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:27,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:27,651 INFO L85 PathProgramCache]: Analyzing trace with hash -95702815, now seen corresponding path program 1 times [2021-10-28 09:59:27,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:27,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886094585] [2021-10-28 09:59:27,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:27,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:27,683 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:27,725 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:34,939 WARN L207 SmtUtils]: Spent 7.13 s on a formula simplification. DAG size of input: 251 DAG size of output: 181 [2021-10-28 09:59:36,688 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:59:36,688 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:59:36,688 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:59:36,688 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:59:36,688 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:59:36,689 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:36,689 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:59:36,689 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:59:36,689 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum10-1.i_Iteration12_Lasso [2021-10-28 09:59:36,689 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:59:36,689 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:59:36,694 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 09:59:36,697 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 09:59:36,700 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 09:59:36,703 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 09:59:36,706 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 09:59:36,709 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 09:59:36,711 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 09:59:36,714 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 09:59:36,717 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 09:59:36,720 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 09:59:36,723 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 09:59:36,726 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 09:59:36,729 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 09:59:36,733 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 09:59:37,292 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 09:59:37,294 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 09:59:37,296 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 09:59:37,298 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 09:59:37,301 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 09:59:37,303 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 09:59:37,305 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 09:59:37,308 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 09:59:37,312 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 09:59:37,637 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:59:37,637 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:59:37,638 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:37,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:37,644 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:37,659 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 09:59:37,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 09:59:37,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:37,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:37,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:37,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:37,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:37,670 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:37,670 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:37,684 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:37,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:37,713 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:37,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:37,714 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:37,716 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 09:59:37,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 09:59:37,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:37,732 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:37,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:37,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:37,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:37,732 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:37,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:37,738 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:37,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:37,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:37,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:37,764 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:37,766 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 09:59:37,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:37,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:37,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:37,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:37,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:37,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 09:59:37,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:37,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:37,780 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:37,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:37,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:37,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:37,806 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:37,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 09:59:37,807 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 09:59:37,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:37,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:37,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:37,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:37,819 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:37,819 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:37,848 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:37,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:37,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:37,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:37,878 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:37,880 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 09:59:37,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 09:59:37,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:37,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:37,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:37,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:37,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:37,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:37,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:37,903 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:37,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-10-28 09:59:37,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:37,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:37,944 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:37,952 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 09:59:37,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:37,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:37,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:37,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:37,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:37,964 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:37,964 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:37,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 09:59:37,976 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-28 09:59:38,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,004 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 09:59:38,005 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 09:59:38,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,014 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:38,014 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,014 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,014 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:38,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:38,015 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:38,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,041 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 09:59:38,042 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 09:59:38,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,051 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:38,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,052 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:38,052 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:38,059 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:38,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,089 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 09:59:38,095 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 09:59:38,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,103 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:38,104 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,104 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,104 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,104 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:38,104 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:38,105 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:38,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,131 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 09:59:38,132 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 09:59:38,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,140 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:38,140 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,140 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:38,140 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:38,141 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-28 09:59:38,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,163 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 09:59:38,165 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 09:59:38,172 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,174 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:38,174 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:38,177 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:38,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,201 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 09:59:38,203 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 09:59:38,210 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,210 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:38,210 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,210 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,211 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:38,211 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:38,212 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-10-28 09:59:38,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,235 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 09:59:38,236 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 09:59:38,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,246 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:38,246 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:38,250 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:38,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,281 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 09:59:38,285 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 09:59:38,295 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,295 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,295 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,295 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,299 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:38,299 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:38,307 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-10-28 09:59:38,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,332 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 09:59:38,334 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 09:59:38,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,344 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:38,345 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:38,353 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-28 09:59:38,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,382 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 09:59:38,384 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 09:59:38,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:38,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,394 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:38,394 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:38,423 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:38,465 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,469 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,473 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 09:59:38,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,487 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:38,488 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:38,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 09:59:38,501 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:38,549 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,553 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,555 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 09:59:38,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,581 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:38,581 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:38,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 09:59:38,604 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:38,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,652 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,654 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 09:59:38,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-28 09:59:38,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,663 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,663 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,665 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:38,665 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:38,681 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:38,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,733 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,735 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 09:59:38,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,751 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:38,751 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:38,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 09:59:38,768 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:38,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,819 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,826 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 09:59:38,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 09:59:38,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,837 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,840 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:38,840 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:38,851 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:38,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,899 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,904 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 09:59:38,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,916 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,918 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:38,918 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:38,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 09:59:38,936 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:38,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-28 09:59:38,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:38,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:38,977 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:38,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 09:59:38,979 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 09:59:38,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:38,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:59:38,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:38,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:38,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:38,988 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:59:38,988 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:59:38,989 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:39,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-10-28 09:59:39,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:39,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:39,015 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:39,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 09:59:39,017 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 09:59:39,025 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:39,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:39,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:39,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:39,028 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:39,028 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:39,054 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:39,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:39,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:39,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:39,097 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:39,105 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 09:59:39,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:39,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:39,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:39,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:39,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:39,118 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:39,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-28 09:59:39,132 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:59:39,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-10-28 09:59:39,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:39,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:39,160 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:39,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-28 09:59:39,161 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 09:59:39,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:59:39,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:59:39,171 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:59:39,171 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:59:39,177 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:59:39,177 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:59:39,201 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:59:39,220 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-10-28 09:59:39,220 INFO L444 ModelExtractionUtils]: 5 out of 19 variables were initially zero. Simplification set additionally 11 variables to zero. [2021-10-28 09:59:39,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:59:39,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:39,222 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:59:39,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 09:59:39,223 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:59:39,234 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 09:59:39,234 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:59:39,234 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_sum_~i~0) = -2*ULTIMATE.start_sum_~i~0 + 19 Supporting invariants [] [2021-10-28 09:59:39,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:39,286 INFO L297 tatePredicateManager]: 11 out of 11 supporting invariants were superfluous and have been removed [2021-10-28 09:59:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:39,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:59:39,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:39,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:59:39,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:39,458 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 09:59:39,459 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 09:59:39,460 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 09:59:39,478 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Result 41 states and 48 transitions. Complement of second has 7 states. [2021-10-28 09:59:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:59:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 09:59:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-28 09:59:39,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 24 letters. Loop has 2 letters. [2021-10-28 09:59:39,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:59:39,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 26 letters. Loop has 2 letters. [2021-10-28 09:59:39,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:59:39,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 24 letters. Loop has 4 letters. [2021-10-28 09:59:39,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:59:39,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 48 transitions. [2021-10-28 09:59:39,483 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:39,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 43 transitions. [2021-10-28 09:59:39,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-10-28 09:59:39,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-28 09:59:39,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 43 transitions. [2021-10-28 09:59:39,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:39,485 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-10-28 09:59:39,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 43 transitions. [2021-10-28 09:59:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-28 09:59:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 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 09:59:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-10-28 09:59:39,488 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-10-28 09:59:39,488 INFO L587 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-10-28 09:59:39,488 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-28 09:59:39,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 43 transitions. [2021-10-28 09:59:39,489 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:39,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:39,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:39,490 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:39,490 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:39,491 INFO L791 eck$LassoCheckResult]: Stem: 1399#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1400#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1411#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1419#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1420#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1414#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1415#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1436#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1435#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1434#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1433#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1432#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1431#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1430#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1429#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1428#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1427#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1426#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1425#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1424#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1423#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1422#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1421#L34-3 assume !(main_~i~1 < 10); 1403#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1404#L20-3 assume !(sum_~i~0 < 10); 1412#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 1413#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1409#L20-8 [2021-10-28 09:59:39,491 INFO L793 eck$LassoCheckResult]: Loop: 1409#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1410#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1409#L20-8 [2021-10-28 09:59:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:39,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1328178265, now seen corresponding path program 1 times [2021-10-28 09:59:39,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:39,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279422878] [2021-10-28 09:59:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:39,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-28 09:59:39,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:39,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279422878] [2021-10-28 09:59:39,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279422878] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:39,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:39,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:59:39,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16194668] [2021-10-28 09:59:39,559 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:39,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:39,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2243, now seen corresponding path program 1 times [2021-10-28 09:59:39,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:39,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645134709] [2021-10-28 09:59:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:39,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:39,565 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:39,569 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:39,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:39,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:59:39,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:59:39,620 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. cyclomatic complexity: 10 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 09:59:39,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:39,647 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-10-28 09:59:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:59:39,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 47 transitions. [2021-10-28 09:59:39,648 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:39,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 47 transitions. [2021-10-28 09:59:39,649 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-10-28 09:59:39,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-10-28 09:59:39,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 47 transitions. [2021-10-28 09:59:39,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:39,650 INFO L681 BuchiCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-10-28 09:59:39,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 47 transitions. [2021-10-28 09:59:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-10-28 09:59:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 38 states have internal predecessors, (43), 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 09:59:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-10-28 09:59:39,653 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-10-28 09:59:39,653 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-10-28 09:59:39,654 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-28 09:59:39,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 43 transitions. [2021-10-28 09:59:39,654 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:39,654 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:39,654 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:39,656 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:39,656 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:39,656 INFO L791 eck$LassoCheckResult]: Stem: 1488#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1489#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1498#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1501#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1502#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1507#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1524#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1523#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1522#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1521#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1520#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1519#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1518#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1517#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1516#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1515#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1514#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1513#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1512#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1511#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1510#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1509#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1508#L34-3 assume !(main_~i~1 < 10); 1490#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1491#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1504#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1505#L20-3 assume !(sum_~i~0 < 10); 1499#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 1500#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1496#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1497#L20-7 [2021-10-28 09:59:39,656 INFO L793 eck$LassoCheckResult]: Loop: 1497#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1506#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1497#L20-7 [2021-10-28 09:59:39,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:39,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1721709263, now seen corresponding path program 1 times [2021-10-28 09:59:39,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:39,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617866547] [2021-10-28 09:59:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:39,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-28 09:59:39,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:39,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617866547] [2021-10-28 09:59:39,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617866547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:39,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342477232] [2021-10-28 09:59:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:39,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:39,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:39,705 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:39,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-28 09:59:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:39,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:59:39,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-28 09:59:39,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342477232] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:39,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:39,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-28 09:59:39,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824606878] [2021-10-28 09:59:39,956 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 2 times [2021-10-28 09:59:39,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:39,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051800475] [2021-10-28 09:59:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:39,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:39,962 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:39,965 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:40,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:59:40,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:59:40,019 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 09:59:40,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:40,059 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-10-28 09:59:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:59:40,060 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 53 transitions. [2021-10-28 09:59:40,061 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:40,062 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 53 transitions. [2021-10-28 09:59:40,062 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-28 09:59:40,062 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 09:59:40,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 53 transitions. [2021-10-28 09:59:40,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:40,063 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-10-28 09:59:40,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 53 transitions. [2021-10-28 09:59:40,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-10-28 09:59:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 42 states have internal predecessors, (47), 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 09:59:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-10-28 09:59:40,066 INFO L704 BuchiCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-10-28 09:59:40,066 INFO L587 BuchiCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-10-28 09:59:40,066 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-28 09:59:40,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 47 transitions. [2021-10-28 09:59:40,067 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:40,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:40,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:40,068 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:40,068 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:40,069 INFO L791 eck$LassoCheckResult]: Stem: 1669#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1670#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1681#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1684#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1685#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1692#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1711#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1710#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1709#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1708#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1707#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1706#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1705#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1704#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1703#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1702#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1701#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1700#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1699#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1698#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1697#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1696#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1695#L34-3 assume !(main_~i~1 < 10); 1673#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1674#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1687#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1688#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1689#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1694#L20-3 assume !(sum_~i~0 < 10); 1682#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 1683#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1690#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1691#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1679#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1680#L20-7 [2021-10-28 09:59:40,069 INFO L793 eck$LassoCheckResult]: Loop: 1680#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1693#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1680#L20-7 [2021-10-28 09:59:40,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:40,070 INFO L85 PathProgramCache]: Analyzing trace with hash 528482161, now seen corresponding path program 1 times [2021-10-28 09:59:40,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:40,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513216204] [2021-10-28 09:59:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:40,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-10-28 09:59:40,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:40,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513216204] [2021-10-28 09:59:40,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513216204] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:40,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664831768] [2021-10-28 09:59:40,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:40,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:40,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:40,125 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:40,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-28 09:59:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:40,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:59:40,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-10-28 09:59:40,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664831768] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:40,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:40,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-28 09:59:40,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447766346] [2021-10-28 09:59:40,388 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:40,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:40,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 3 times [2021-10-28 09:59:40,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:40,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933846944] [2021-10-28 09:59:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:40,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:40,394 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:40,397 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:40,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:40,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:59:40,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:59:40,448 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. cyclomatic complexity: 9 Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 09:59:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:40,525 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2021-10-28 09:59:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:59:40,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 59 transitions. [2021-10-28 09:59:40,527 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:40,527 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 55 states and 59 transitions. [2021-10-28 09:59:40,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-28 09:59:40,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-10-28 09:59:40,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 59 transitions. [2021-10-28 09:59:40,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:40,528 INFO L681 BuchiCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-28 09:59:40,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 59 transitions. [2021-10-28 09:59:40,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2021-10-28 09:59:40,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 46 states have internal predecessors, (51), 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 09:59:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-10-28 09:59:40,532 INFO L704 BuchiCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-10-28 09:59:40,532 INFO L587 BuchiCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-10-28 09:59:40,532 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-28 09:59:40,532 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 51 transitions. [2021-10-28 09:59:40,533 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:40,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:40,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:40,535 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:40,535 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:40,535 INFO L791 eck$LassoCheckResult]: Stem: 1875#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1876#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1887#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1890#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1891#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1899#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1918#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1917#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1916#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1915#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1914#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1913#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1912#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1911#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1910#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1909#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1908#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1907#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1906#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1905#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1904#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1903#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1902#L34-3 assume !(main_~i~1 < 10); 1879#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1880#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1893#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1921#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1896#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1894#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1895#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1901#L20-3 assume !(sum_~i~0 < 10); 1888#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 1889#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1897#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1919#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1920#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1898#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1885#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1886#L20-7 [2021-10-28 09:59:40,535 INFO L793 eck$LassoCheckResult]: Loop: 1886#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1900#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1886#L20-7 [2021-10-28 09:59:40,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:40,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1101320015, now seen corresponding path program 2 times [2021-10-28 09:59:40,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:40,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504529041] [2021-10-28 09:59:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:40,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-28 09:59:40,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:40,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504529041] [2021-10-28 09:59:40,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504529041] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:40,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666108201] [2021-10-28 09:59:40,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:59:40,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:40,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:40,607 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:40,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-28 09:59:40,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:59:40,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:40,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:59:40,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-28 09:59:40,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666108201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:40,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:40,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-28 09:59:40,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618579206] [2021-10-28 09:59:40,954 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 4 times [2021-10-28 09:59:40,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:40,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959267247] [2021-10-28 09:59:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:40,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:40,969 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:40,972 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:41,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:41,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:59:41,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:59:41,022 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. cyclomatic complexity: 9 Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 09:59:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:41,087 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2021-10-28 09:59:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:59:41,088 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2021-10-28 09:59:41,089 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:41,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 61 states and 65 transitions. [2021-10-28 09:59:41,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2021-10-28 09:59:41,090 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-10-28 09:59:41,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 65 transitions. [2021-10-28 09:59:41,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:41,090 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-10-28 09:59:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 65 transitions. [2021-10-28 09:59:41,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2021-10-28 09:59:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 50 states have internal predecessors, (55), 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 09:59:41,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-10-28 09:59:41,099 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-10-28 09:59:41,099 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-10-28 09:59:41,100 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-28 09:59:41,100 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 55 transitions. [2021-10-28 09:59:41,100 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:41,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:41,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:41,101 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:41,102 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:41,102 INFO L791 eck$LassoCheckResult]: Stem: 2106#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 2107#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 2116#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2119#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2120#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2127#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2148#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2147#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2146#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2145#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2144#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2143#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2142#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2141#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2140#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2139#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2138#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2137#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2136#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2135#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2134#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2133#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2132#L34-3 assume !(main_~i~1 < 10); 2108#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2109#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2122#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2123#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2124#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2154#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2153#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2152#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2131#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2130#L20-3 assume !(sum_~i~0 < 10); 2117#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 2118#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2125#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2126#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2114#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2115#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2151#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2150#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2149#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2129#L20-7 [2021-10-28 09:59:41,103 INFO L793 eck$LassoCheckResult]: Loop: 2129#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2128#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2129#L20-7 [2021-10-28 09:59:41,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:41,103 INFO L85 PathProgramCache]: Analyzing trace with hash 512696561, now seen corresponding path program 3 times [2021-10-28 09:59:41,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:41,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022411541] [2021-10-28 09:59:41,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:41,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-28 09:59:41,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:41,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022411541] [2021-10-28 09:59:41,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022411541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:41,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603091076] [2021-10-28 09:59:41,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:59:41,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:41,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:41,200 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:41,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-28 09:59:41,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 09:59:41,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:41,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:59:41,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-28 09:59:41,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603091076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:41,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:41,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-28 09:59:41,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058563427] [2021-10-28 09:59:41,565 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:41,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:41,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 5 times [2021-10-28 09:59:41,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:41,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581928071] [2021-10-28 09:59:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:41,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:41,571 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:41,574 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:41,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:59:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:59:41,622 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. cyclomatic complexity: 9 Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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 09:59:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:41,718 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-10-28 09:59:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:59:41,719 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 67 states and 71 transitions. [2021-10-28 09:59:41,719 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:41,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 67 states to 67 states and 71 transitions. [2021-10-28 09:59:41,720 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-28 09:59:41,721 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-28 09:59:41,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 71 transitions. [2021-10-28 09:59:41,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:41,721 INFO L681 BuchiCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-10-28 09:59:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states and 71 transitions. [2021-10-28 09:59:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2021-10-28 09:59:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 54 states have internal predecessors, (59), 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 09:59:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-28 09:59:41,724 INFO L704 BuchiCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-28 09:59:41,724 INFO L587 BuchiCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-28 09:59:41,724 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-28 09:59:41,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 59 transitions. [2021-10-28 09:59:41,725 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:41,725 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:41,725 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:41,728 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:41,728 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:41,729 INFO L791 eck$LassoCheckResult]: Stem: 2358#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 2359#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 2368#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2371#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2372#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2379#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2400#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2399#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2398#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2397#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2396#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2395#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2394#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2393#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2392#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2391#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2390#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2389#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2388#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2387#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2386#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2385#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2384#L34-3 assume !(main_~i~1 < 10); 2360#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2361#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2374#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2375#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2376#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2410#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2409#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2408#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2407#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2406#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2383#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2382#L20-3 assume !(sum_~i~0 < 10); 2369#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 2370#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2377#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2378#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2366#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2367#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2405#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2404#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2403#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2402#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2401#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2381#L20-7 [2021-10-28 09:59:41,729 INFO L793 eck$LassoCheckResult]: Loop: 2381#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2380#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2381#L20-7 [2021-10-28 09:59:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:41,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1883803697, now seen corresponding path program 4 times [2021-10-28 09:59:41,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:41,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420099519] [2021-10-28 09:59:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:41,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-10-28 09:59:41,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:41,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420099519] [2021-10-28 09:59:41,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420099519] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:41,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680851027] [2021-10-28 09:59:41,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:59:41,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:41,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:41,853 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:41,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-28 09:59:42,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:59:42,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:42,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:59:42,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:42,230 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-10-28 09:59:42,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680851027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:42,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:42,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-28 09:59:42,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122018668] [2021-10-28 09:59:42,230 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:42,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:42,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 6 times [2021-10-28 09:59:42,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:42,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073785275] [2021-10-28 09:59:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:42,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:42,237 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:42,240 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:42,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:59:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:59:42,289 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. cyclomatic complexity: 9 Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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 09:59:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:42,390 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2021-10-28 09:59:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:59:42,390 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 77 transitions. [2021-10-28 09:59:42,391 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:42,391 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 73 states and 77 transitions. [2021-10-28 09:59:42,391 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-10-28 09:59:42,391 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-28 09:59:42,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 77 transitions. [2021-10-28 09:59:42,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:42,392 INFO L681 BuchiCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-10-28 09:59:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states and 77 transitions. [2021-10-28 09:59:42,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2021-10-28 09:59:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 58 states have internal predecessors, (63), 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 09:59:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-10-28 09:59:42,395 INFO L704 BuchiCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-10-28 09:59:42,395 INFO L587 BuchiCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-10-28 09:59:42,395 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-28 09:59:42,395 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59 states and 63 transitions. [2021-10-28 09:59:42,396 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:42,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:42,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:42,396 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:42,397 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:42,397 INFO L791 eck$LassoCheckResult]: Stem: 2633#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 2634#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 2643#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2646#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2647#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2654#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2675#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2674#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2673#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2672#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2671#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2670#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2669#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2668#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2667#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2666#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2665#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2664#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2663#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2662#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2661#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2660#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2659#L34-3 assume !(main_~i~1 < 10); 2635#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2636#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2649#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2650#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2651#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2689#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2688#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2687#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2686#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2685#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2684#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2683#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2658#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2657#L20-3 assume !(sum_~i~0 < 10); 2644#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 2645#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2652#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2653#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2641#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2642#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2682#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2681#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2680#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2679#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2678#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2677#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2676#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2656#L20-7 [2021-10-28 09:59:42,397 INFO L793 eck$LassoCheckResult]: Loop: 2656#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2655#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2656#L20-7 [2021-10-28 09:59:42,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:42,398 INFO L85 PathProgramCache]: Analyzing trace with hash -414957967, now seen corresponding path program 5 times [2021-10-28 09:59:42,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:42,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549757547] [2021-10-28 09:59:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:42,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-10-28 09:59:42,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:42,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549757547] [2021-10-28 09:59:42,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549757547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:42,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394143291] [2021-10-28 09:59:42,477 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:59:42,477 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:42,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:42,482 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:42,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-28 09:59:42,772 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-10-28 09:59:42,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:42,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:59:42,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-10-28 09:59:42,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394143291] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:42,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:42,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-28 09:59:42,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345541911] [2021-10-28 09:59:42,935 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:42,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:42,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 7 times [2021-10-28 09:59:42,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:42,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355761584] [2021-10-28 09:59:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:42,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:42,946 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:42,950 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:43,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:43,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:59:43,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:59:43,018 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. cyclomatic complexity: 9 Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 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 09:59:43,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:43,138 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2021-10-28 09:59:43,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:59:43,139 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 83 transitions. [2021-10-28 09:59:43,140 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:43,141 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 79 states and 83 transitions. [2021-10-28 09:59:43,141 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-28 09:59:43,141 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-28 09:59:43,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 83 transitions. [2021-10-28 09:59:43,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:43,141 INFO L681 BuchiCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-10-28 09:59:43,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 83 transitions. [2021-10-28 09:59:43,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2021-10-28 09:59:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 62 states have internal predecessors, (67), 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 09:59:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-10-28 09:59:43,155 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-10-28 09:59:43,155 INFO L587 BuchiCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-10-28 09:59:43,156 INFO L425 BuchiCegarLoop]: ======== Iteration 20============ [2021-10-28 09:59:43,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 63 states and 67 transitions. [2021-10-28 09:59:43,156 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:43,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:43,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:43,158 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:43,158 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:43,158 INFO L791 eck$LassoCheckResult]: Stem: 2929#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 2930#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 2941#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2944#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2945#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2951#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2972#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2971#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2970#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2969#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2968#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2967#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2966#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2965#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2964#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2963#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2962#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2961#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2960#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2959#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2958#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2957#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2956#L34-3 assume !(main_~i~1 < 10); 2933#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2934#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2947#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2948#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2949#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2991#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2990#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2989#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2987#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2985#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2983#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2981#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2979#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2977#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2955#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2954#L20-3 assume !(sum_~i~0 < 10); 2942#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 2943#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2939#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2940#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2950#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2988#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2986#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2984#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2982#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2980#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2978#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2976#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2975#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2974#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2973#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2953#L20-7 [2021-10-28 09:59:43,158 INFO L793 eck$LassoCheckResult]: Loop: 2953#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2952#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2953#L20-7 [2021-10-28 09:59:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:43,159 INFO L85 PathProgramCache]: Analyzing trace with hash 919530417, now seen corresponding path program 6 times [2021-10-28 09:59:43,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:43,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210001532] [2021-10-28 09:59:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:43,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 09:59:43,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:43,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210001532] [2021-10-28 09:59:43,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210001532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:43,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159708947] [2021-10-28 09:59:43,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:59:43,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:43,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:43,273 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:43,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-28 09:59:43,920 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-10-28 09:59:43,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:43,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:59:43,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 19 proven. 49 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-10-28 09:59:44,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159708947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:44,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:44,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 13 [2021-10-28 09:59:44,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008773141] [2021-10-28 09:59:44,144 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:44,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:44,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 8 times [2021-10-28 09:59:44,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:44,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744460009] [2021-10-28 09:59:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:44,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:44,150 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:44,153 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:44,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:44,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:59:44,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:59:44,204 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. cyclomatic complexity: 9 Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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 09:59:44,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:44,476 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2021-10-28 09:59:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:59:44,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 89 transitions. [2021-10-28 09:59:44,477 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:44,478 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 85 states and 89 transitions. [2021-10-28 09:59:44,478 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2021-10-28 09:59:44,479 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2021-10-28 09:59:44,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 89 transitions. [2021-10-28 09:59:44,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:44,479 INFO L681 BuchiCegarLoop]: Abstraction has 85 states and 89 transitions. [2021-10-28 09:59:44,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states and 89 transitions. [2021-10-28 09:59:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2021-10-28 09:59:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 66 states have internal predecessors, (71), 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 09:59:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-10-28 09:59:44,482 INFO L704 BuchiCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-10-28 09:59:44,483 INFO L587 BuchiCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-10-28 09:59:44,483 INFO L425 BuchiCegarLoop]: ======== Iteration 21============ [2021-10-28 09:59:44,483 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 71 transitions. [2021-10-28 09:59:44,484 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:44,484 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:44,484 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:44,485 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:44,485 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:44,485 INFO L791 eck$LassoCheckResult]: Stem: 3270#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 3271#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 3280#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3283#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3284#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3291#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3312#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3311#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3310#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3309#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3308#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3307#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3306#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3305#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3304#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3303#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3302#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3301#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3300#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3299#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3298#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3297#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3296#L34-3 assume !(main_~i~1 < 10); 3272#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3273#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3286#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3287#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3288#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3334#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3333#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3332#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3331#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3330#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3329#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3328#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3327#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3326#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3325#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3324#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3295#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3294#L20-3 assume !(sum_~i~0 < 10); 3281#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 3282#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3289#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3290#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3278#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3279#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3323#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3322#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3321#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3320#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3319#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3318#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3317#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3316#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3315#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3314#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3313#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3293#L20-7 [2021-10-28 09:59:44,503 INFO L793 eck$LassoCheckResult]: Loop: 3293#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3292#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3293#L20-7 [2021-10-28 09:59:44,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:44,504 INFO L85 PathProgramCache]: Analyzing trace with hash 231036913, now seen corresponding path program 7 times [2021-10-28 09:59:44,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:44,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406076184] [2021-10-28 09:59:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:44,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-10-28 09:59:44,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:44,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406076184] [2021-10-28 09:59:44,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406076184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:44,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818572930] [2021-10-28 09:59:44,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:59:44,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:44,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:44,678 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:44,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-28 09:59:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:44,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:59:44,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-10-28 09:59:45,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818572930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:45,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:45,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-28 09:59:45,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094536346] [2021-10-28 09:59:45,105 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:45,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:45,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 9 times [2021-10-28 09:59:45,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:45,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321185010] [2021-10-28 09:59:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:45,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:45,111 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:45,115 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:45,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:45,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:59:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:59:45,180 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. cyclomatic complexity: 9 Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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 09:59:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:45,306 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2021-10-28 09:59:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:59:45,306 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 95 transitions. [2021-10-28 09:59:45,308 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:45,309 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 91 states and 95 transitions. [2021-10-28 09:59:45,309 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2021-10-28 09:59:45,310 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2021-10-28 09:59:45,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 95 transitions. [2021-10-28 09:59:45,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:45,310 INFO L681 BuchiCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-10-28 09:59:45,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 95 transitions. [2021-10-28 09:59:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2021-10-28 09:59:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.056338028169014) internal successors, (75), 70 states have internal predecessors, (75), 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 09:59:45,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-10-28 09:59:45,314 INFO L704 BuchiCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-10-28 09:59:45,314 INFO L587 BuchiCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-10-28 09:59:45,314 INFO L425 BuchiCegarLoop]: ======== Iteration 22============ [2021-10-28 09:59:45,314 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 75 transitions. [2021-10-28 09:59:45,315 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:45,315 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:45,315 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:45,316 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:45,316 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:45,316 INFO L791 eck$LassoCheckResult]: Stem: 3614#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 3615#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 3624#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3627#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3628#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3635#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3656#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3655#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3654#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3653#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3652#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3651#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3650#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3649#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3648#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3647#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3646#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3645#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3644#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3643#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3642#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3641#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3640#L34-3 assume !(main_~i~1 < 10); 3616#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3617#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3630#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3631#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3632#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3682#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3681#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3680#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3679#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3678#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3677#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3676#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3675#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3674#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3673#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3672#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3671#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3670#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3639#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3638#L20-3 assume !(sum_~i~0 < 10); 3625#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 3626#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3633#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3634#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3622#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3623#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3669#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3668#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3667#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3666#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3665#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3664#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3663#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3662#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3661#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3660#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3659#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3658#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3657#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3637#L20-7 [2021-10-28 09:59:45,317 INFO L793 eck$LassoCheckResult]: Loop: 3637#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3636#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3637#L20-7 [2021-10-28 09:59:45,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:45,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1835777231, now seen corresponding path program 8 times [2021-10-28 09:59:45,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:45,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764128140] [2021-10-28 09:59:45,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:45,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-10-28 09:59:45,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:45,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764128140] [2021-10-28 09:59:45,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764128140] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:45,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956241194] [2021-10-28 09:59:45,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:59:45,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:45,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:45,491 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:45,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-28 09:59:45,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:59:45,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:45,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:59:45,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-10-28 09:59:45,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956241194] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:45,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:59:45,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-28 09:59:45,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327592114] [2021-10-28 09:59:45,995 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:59:45,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:45,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 10 times [2021-10-28 09:59:45,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:45,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940410135] [2021-10-28 09:59:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:45,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:46,005 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:46,010 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:46,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:46,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:59:46,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:59:46,059 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. cyclomatic complexity: 9 Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 09:59:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:46,203 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2021-10-28 09:59:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:59:46,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 94 states and 98 transitions. [2021-10-28 09:59:46,205 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:46,206 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 94 states to 94 states and 98 transitions. [2021-10-28 09:59:46,207 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2021-10-28 09:59:46,207 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2021-10-28 09:59:46,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 98 transitions. [2021-10-28 09:59:46,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:46,207 INFO L681 BuchiCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-10-28 09:59:46,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 98 transitions. [2021-10-28 09:59:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 75. [2021-10-28 09:59:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 74 states have internal predecessors, (79), 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 09:59:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-10-28 09:59:46,211 INFO L704 BuchiCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-10-28 09:59:46,212 INFO L587 BuchiCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-10-28 09:59:46,212 INFO L425 BuchiCegarLoop]: ======== Iteration 23============ [2021-10-28 09:59:46,212 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 79 transitions. [2021-10-28 09:59:46,213 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-28 09:59:46,213 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:46,213 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:46,214 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:46,214 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:46,214 INFO L791 eck$LassoCheckResult]: Stem: 3976#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 3977#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 3988#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3991#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3992#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3998#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4050#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4049#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4048#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4047#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4046#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4045#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4044#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4043#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4042#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4041#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4040#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4039#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4038#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4037#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4036#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4035#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4034#L34-3 assume !(main_~i~1 < 10); 3980#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3981#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3994#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3995#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3996#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4033#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4032#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4030#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4028#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4026#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4024#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4022#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4020#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4018#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4016#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4014#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4012#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4010#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4008#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4006#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4003#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4002#L20-3 assume !(sum_~i~0 < 10); 3989#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 3990#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3986#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3987#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3997#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4031#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4029#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4027#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4025#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4023#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4021#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4019#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4017#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4015#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4013#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4011#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4009#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4007#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4005#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4004#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4001#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4000#L20-7 [2021-10-28 09:59:46,214 INFO L793 eck$LassoCheckResult]: Loop: 4000#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3999#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4000#L20-7 [2021-10-28 09:59:46,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:46,215 INFO L85 PathProgramCache]: Analyzing trace with hash -549950095, now seen corresponding path program 9 times [2021-10-28 09:59:46,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:46,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009277351] [2021-10-28 09:59:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:46,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:46,445 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:46,613 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:46,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:46,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 11 times [2021-10-28 09:59:46,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:46,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652961664] [2021-10-28 09:59:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:46,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:46,621 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:46,624 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash -221062545, now seen corresponding path program 10 times [2021-10-28 09:59:46,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:46,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103350147] [2021-10-28 09:59:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:46,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 81 proven. 19 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-10-28 09:59:46,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:46,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103350147] [2021-10-28 09:59:46,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103350147] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:46,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317818617] [2021-10-28 09:59:46,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:59:46,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:46,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:46,836 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:46,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-28 09:59:47,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:59:47,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:59:47,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:59:47,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-10-28 09:59:47,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317818617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:47,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:59:47,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 13 [2021-10-28 09:59:47,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584384211] [2021-10-28 09:59:47,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:59:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:59:47,530 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. cyclomatic complexity: 9 Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 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 09:59:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:47,736 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-10-28 09:59:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:59:47,736 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 94 states and 95 transitions. [2021-10-28 09:59:47,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 09:59:47,738 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 94 states to 72 states and 73 transitions. [2021-10-28 09:59:47,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2021-10-28 09:59:47,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2021-10-28 09:59:47,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 73 transitions. [2021-10-28 09:59:47,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:59:47,739 INFO L681 BuchiCegarLoop]: Abstraction has 72 states and 73 transitions. [2021-10-28 09:59:47,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 73 transitions. [2021-10-28 09:59:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-28 09:59:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 71 states have internal predecessors, (73), 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 09:59:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2021-10-28 09:59:47,741 INFO L704 BuchiCegarLoop]: Abstraction has 72 states and 73 transitions. [2021-10-28 09:59:47,742 INFO L587 BuchiCegarLoop]: Abstraction has 72 states and 73 transitions. [2021-10-28 09:59:47,742 INFO L425 BuchiCegarLoop]: ======== Iteration 24============ [2021-10-28 09:59:47,742 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states and 73 transitions. [2021-10-28 09:59:47,742 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 09:59:47,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:59:47,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:59:47,743 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:47,743 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:59:47,744 INFO L791 eck$LassoCheckResult]: Stem: 4365#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 4366#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 4375#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4383#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4384#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4378#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4379#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4436#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4435#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4434#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4433#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4432#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4431#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4430#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4429#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4428#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4427#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4426#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4425#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4424#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4423#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4422#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4421#L34-3 assume !(main_~i~1 < 10); 4369#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 4370#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4380#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4381#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4420#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4419#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4418#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4417#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4415#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4413#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4411#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4409#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4407#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4405#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4403#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4401#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4399#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4397#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4395#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4393#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4391#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4389#L20-3 assume !(sum_~i~0 < 10); 4376#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 4377#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 4373#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4374#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4382#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4416#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4414#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4412#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4410#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4408#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4406#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4404#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4402#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4400#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4398#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4396#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4394#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4392#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4390#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4388#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4387#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4386#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4385#L20-8 assume !(sum_~i~0 < 10); 4367#L20-9 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 4368#L23-1 main_#t~ret10 := sum_#res;main_~ret2~0 := main_#t~ret10;havoc main_#t~ret10;call main_#t~mem11 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem11;havoc main_#t~mem11;main_~i~2 := 0; 4372#L43-3 [2021-10-28 09:59:47,744 INFO L793 eck$LassoCheckResult]: Loop: 4372#L43-3 assume !!(main_~i~2 < 9);call main_#t~mem13 := read~int(main_~#x~0.base, main_~#x~0.offset + 4 * (1 + main_~i~2), 4);call write~int(main_#t~mem13, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~2, 4);havoc main_#t~mem13; 4371#L43-2 main_#t~post12 := main_~i~2;main_~i~2 := 1 + main_#t~post12;havoc main_#t~post12; 4372#L43-3 [2021-10-28 09:59:47,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:47,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1987708689, now seen corresponding path program 1 times [2021-10-28 09:59:47,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:47,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097874780] [2021-10-28 09:59:47,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:47,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:47,920 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:48,166 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2755, now seen corresponding path program 1 times [2021-10-28 09:59:48,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:48,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445313290] [2021-10-28 09:59:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:48,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:48,173 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:48,178 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:59:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1072398385, now seen corresponding path program 1 times [2021-10-28 09:59:48,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:48,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733837662] [2021-10-28 09:59:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:48,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:48,415 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:59:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:48,525 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 10:00:17,872 WARN L207 SmtUtils]: Spent 29.25 s on a formula simplification. DAG size of input: 617 DAG size of output: 424 [2021-10-28 10:00:26,294 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 10:00:26,294 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 10:00:26,294 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 10:00:26,294 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 10:00:26,295 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 10:00:26,295 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:26,295 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 10:00:26,295 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 10:00:26,295 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum10-1.i_Iteration24_Lasso [2021-10-28 10:00:26,295 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 10:00:26,295 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 10:00:26,301 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 10:00:26,304 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 10:00:26,306 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 10:00:26,309 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 10:00:26,311 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 10:00:26,315 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 10:00:26,317 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 10:00:26,319 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 10:00:26,321 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 10:00:26,323 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 10:00:26,327 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 10:00:26,329 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 10:00:26,331 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 10:00:26,333 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 10:00:29,822 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-10-28 10:00:31,311 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 10:00:31,314 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 10:00:31,316 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 10:00:31,319 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 10:00:31,321 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 10:00:32,274 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 10:00:32,274 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 10:00:32,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,279 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,285 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 10:00:32,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-28 10:00:32,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 10:00:32,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,298 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 10:00:32,298 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 10:00:32,304 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:32,327 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,328 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-10-28 10:00:32,329 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 10:00:32,337 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,337 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 10:00:32,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,338 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 10:00:32,338 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 10:00:32,339 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:32,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,361 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-10-28 10:00:32,362 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 10:00:32,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,371 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 10:00:32,372 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 10:00:32,404 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:32,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,442 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,444 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 10:00:32,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 10:00:32,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 10:00:32,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 10:00:32,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-10-28 10:00:32,468 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:32,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,509 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,511 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 10:00:32,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,521 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 10:00:32,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,521 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 10:00:32,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 10:00:32,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-28 10:00:32,532 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:32,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,573 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,575 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 10:00:32,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 10:00:32,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 10:00:32,587 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 10:00:32,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-28 10:00:32,604 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:32,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,644 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,646 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 10:00:32,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,657 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 10:00:32,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,658 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 10:00:32,658 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 10:00:32,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-28 10:00:32,668 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2021-10-28 10:00:32,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,706 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-28 10:00:32,707 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 10:00:32,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,715 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 10:00:32,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,716 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 10:00:32,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 10:00:32,717 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:32,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,738 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-28 10:00:32,740 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 10:00:32,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,748 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 10:00:32,749 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 10:00:32,751 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2021-10-28 10:00:32,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,772 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-10-28 10:00:32,773 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 10:00:32,781 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,781 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,781 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,781 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,782 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 10:00:32,782 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 10:00:32,784 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:32,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,808 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-10-28 10:00:32,810 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 10:00:32,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 10:00:32,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 10:00:32,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 10:00:32,820 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:32,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,847 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-10-28 10:00:32,849 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 10:00:32,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,857 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 10:00:32,857 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,857 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 10:00:32,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 10:00:32,859 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2021-10-28 10:00:32,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,884 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2021-10-28 10:00:32,890 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 10:00:32,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,899 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 10:00:32,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,900 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 10:00:32,900 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 10:00:32,901 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:32,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2021-10-28 10:00:32,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:32,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:32,927 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:32,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-28 10:00:32,928 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 10:00:32,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:32,937 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:32,937 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:32,937 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:32,939 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 10:00:32,939 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 10:00:32,972 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:33,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:33,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:33,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:33,004 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:33,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-28 10:00:33,006 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 10:00:33,014 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:33,014 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 10:00:33,014 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:33,014 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:33,014 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:33,015 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 10:00:33,015 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 10:00:33,016 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 10:00:33,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2021-10-28 10:00:33,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:33,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:33,038 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:33,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-28 10:00:33,039 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 10:00:33,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 10:00:33,047 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 10:00:33,047 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 10:00:33,047 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 10:00:33,053 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 10:00:33,054 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 10:00:33,076 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 10:00:33,141 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2021-10-28 10:00:33,142 INFO L444 ModelExtractionUtils]: 4 out of 28 variables were initially zero. Simplification set additionally 21 variables to zero. [2021-10-28 10:00:33,142 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 10:00:33,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 10:00:33,143 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 10:00:33,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-28 10:00:33,144 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 10:00:33,152 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 10:00:33,152 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 10:00:33,152 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~2) = -2*ULTIMATE.start_main_~i~2 + 17 Supporting invariants [] [2021-10-28 10:00:33,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:33,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:34,173 INFO L297 tatePredicateManager]: 133 out of 133 supporting invariants were superfluous and have been removed [2021-10-28 10:00:34,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 10:00:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:00:34,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 10:00:34,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:00:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 10:00:34,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 10:00:34,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 10:00:34,460 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 10:00:34,460 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 10:00:34,460 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states and 73 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 10:00:34,487 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states and 73 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) Result 74 states and 76 transitions. Complement of second has 4 states. [2021-10-28 10:00:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 10:00:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 10:00:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2021-10-28 10:00:34,489 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 70 letters. Loop has 2 letters. [2021-10-28 10:00:34,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 10:00:34,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 72 letters. Loop has 2 letters. [2021-10-28 10:00:34,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 10:00:34,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 70 letters. Loop has 4 letters. [2021-10-28 10:00:34,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 10:00:34,491 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 76 transitions. [2021-10-28 10:00:34,493 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 10:00:34,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 0 states and 0 transitions. [2021-10-28 10:00:34,508 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 10:00:34,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 10:00:34,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 10:00:34,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 10:00:34,509 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 10:00:34,509 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 10:00:34,509 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 10:00:34,509 INFO L425 BuchiCegarLoop]: ======== Iteration 25============ [2021-10-28 10:00:34,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 10:00:34,510 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 10:00:34,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 10:00:34,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:00:34 BoogieIcfgContainer [2021-10-28 10:00:34,517 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 10:00:34,518 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 10:00:34,518 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 10:00:34,518 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 10:00:34,519 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:59:19" (3/4) ... [2021-10-28 10:00:34,522 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 10:00:34,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 10:00:34,523 INFO L168 Benchmark]: Toolchain (without parser) took 75512.00 ms. Allocated memory was 90.2 MB in the beginning and 197.1 MB in the end (delta: 107.0 MB). Free memory was 52.7 MB in the beginning and 93.0 MB in the end (delta: -40.2 MB). Peak memory consumption was 67.0 MB. Max. memory is 16.1 GB. [2021-10-28 10:00:34,524 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 10:00:34,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.85 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 52.4 MB in the beginning and 88.1 MB in the end (delta: -35.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 10:00:34,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.66 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 86.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 10:00:34,525 INFO L168 Benchmark]: Boogie Preprocessor took 62.18 ms. Allocated memory is still 113.2 MB. Free memory was 86.5 MB in the beginning and 85.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 10:00:34,526 INFO L168 Benchmark]: RCFGBuilder took 398.26 ms. Allocated memory is still 113.2 MB. Free memory was 85.1 MB in the beginning and 73.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 10:00:34,526 INFO L168 Benchmark]: BuchiAutomizer took 74579.74 ms. Allocated memory was 113.2 MB in the beginning and 197.1 MB in the end (delta: 83.9 MB). Free memory was 72.9 MB in the beginning and 93.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 65.8 MB. Max. memory is 16.1 GB. [2021-10-28 10:00:34,526 INFO L168 Benchmark]: Witness Printer took 4.71 ms. Allocated memory is still 197.1 MB. Free memory is still 93.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 10:00:34,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 377.85 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 52.4 MB in the beginning and 88.1 MB in the end (delta: -35.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.66 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 86.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.18 ms. Allocated memory is still 113.2 MB. Free memory was 86.5 MB in the beginning and 85.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 398.26 ms. Allocated memory is still 113.2 MB. Free memory was 85.1 MB in the beginning and 73.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 74579.74 ms. Allocated memory was 113.2 MB in the beginning and 197.1 MB in the end (delta: 83.9 MB). Free memory was 72.9 MB in the beginning and 93.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 65.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.71 ms. Allocated memory is still 197.1 MB. Free memory is still 93.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 24 terminating modules (21 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 19 * unknown-#length-unknown[x] + -8 * i and consists of 5 locations. One deterministic module has affine ranking function 19 + -2 * i and consists of 4 locations. One deterministic module has affine ranking function 17 + -2 * i and consists of 3 locations. 21 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 74.5s and 25 iterations. TraceHistogramMax:10. Analysis of lassos took 71.5s. Construction of modules took 1.1s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 24. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 136 StatesRemovedByMinimization, 19 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 75 states and ocurred in iteration 22. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 410 SDtfs, 454 SDslu, 840 SDs, 0 SdLazy, 918 SolverSat, 311 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU20 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital1073 mio100 ax100 hnf99 lsp124 ukn39 mio100 lsp33 div94 bol100 ite100 ukn100 eq166 hnf88 smp97 dnf150 smp83 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms 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: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 10:00:34,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:34,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-28 10:00:34,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:35,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-28 10:00:35,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-28 10:00:35,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-28 10:00:35,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-28 10:00:35,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-28 10:00:36,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-28 10:00:36,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-28 10:00:36,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:36,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:36,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:37,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:37,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:37,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 10:00:37,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-28 10:00:37,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-28 10:00:38,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-28 10:00:38,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91dab5c-fd1c-4c3d-bb17-1b3579de322f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...