./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.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_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/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_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/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_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/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 991fb09b573d5827d0db553f1ea89a581f5a664ba8b68d6f14a043df738f2f6d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:12:41,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:12:41,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:12:41,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:12:41,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:12:41,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:12:41,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:12:41,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:12:41,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:12:41,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:12:41,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:12:41,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:12:41,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:12:41,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:12:41,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:12:41,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:12:41,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:12:41,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:12:41,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:12:41,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:12:41,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:12:41,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:12:41,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:12:41,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:12:41,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:12:41,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:12:41,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:12:41,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:12:41,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:12:41,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:12:41,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:12:41,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:12:41,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:12:41,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:12:41,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:12:41,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:12:41,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:12:41,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:12:41,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:12:41,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:12:41,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:12:41,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:12:41,753 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:12:41,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:12:41,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:12:41,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:12:41,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:12:41,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:12:41,756 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:12:41,756 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:12:41,756 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:12:41,756 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:12:41,756 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:12:41,757 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:12:41,757 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:12:41,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:12:41,757 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:12:41,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:12:41,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:12:41,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:12:41,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:12:41,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:12:41,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:12:41,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:12:41,759 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:12:41,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:12:41,759 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:12:41,759 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:12:41,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:12:41,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:12:41,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:12:41,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:12:41,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:12:41,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:12:41,762 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:12:41,762 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_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 991fb09b573d5827d0db553f1ea89a581f5a664ba8b68d6f14a043df738f2f6d [2021-10-28 09:12:42,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:12:42,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:12:42,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:12:42,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:12:42,042 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:12:42,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i [2021-10-28 09:12:42,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/data/000b71fae/4a1a3e333723457cb64739e553f38db1/FLAG3b043cb9a [2021-10-28 09:12:42,591 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:12:42,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i [2021-10-28 09:12:42,616 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/data/000b71fae/4a1a3e333723457cb64739e553f38db1/FLAG3b043cb9a [2021-10-28 09:12:42,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/data/000b71fae/4a1a3e333723457cb64739e553f38db1 [2021-10-28 09:12:42,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:12:42,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:12:42,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:12:42,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:12:42,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:12:42,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:12:42" (1/1) ... [2021-10-28 09:12:42,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c909483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:42, skipping insertion in model container [2021-10-28 09:12:42,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:12:42" (1/1) ... [2021-10-28 09:12:42,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:12:43,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:12:43,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:12:43,380 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:12:43,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:12:43,496 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:12:43,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43 WrapperNode [2021-10-28 09:12:43,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:12:43,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:12:43,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:12:43,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:12:43,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43" (1/1) ... [2021-10-28 09:12:43,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43" (1/1) ... [2021-10-28 09:12:43,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:12:43,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:12:43,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:12:43,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:12:43,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43" (1/1) ... [2021-10-28 09:12:43,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43" (1/1) ... [2021-10-28 09:12:43,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43" (1/1) ... [2021-10-28 09:12:43,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43" (1/1) ... [2021-10-28 09:12:43,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43" (1/1) ... [2021-10-28 09:12:43,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43" (1/1) ... [2021-10-28 09:12:43,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43" (1/1) ... [2021-10-28 09:12:43,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:12:43,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:12:43,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:12:43,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:12:43,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43" (1/1) ... [2021-10-28 09:12:43,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:43,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:43,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:12:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:12:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:12:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:12:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:12:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:12:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:12:44,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:12:44,136 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 09:12:44,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:12:44 BoogieIcfgContainer [2021-10-28 09:12:44,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:12:44,139 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:12:44,140 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:12:44,143 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:12:44,144 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:12:44,144 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:12:42" (1/3) ... [2021-10-28 09:12:44,145 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34963035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:12:44, skipping insertion in model container [2021-10-28 09:12:44,146 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:12:44,146 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:43" (2/3) ... [2021-10-28 09:12:44,146 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34963035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:12:44, skipping insertion in model container [2021-10-28 09:12:44,146 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:12:44,146 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:12:44" (3/3) ... [2021-10-28 09:12:44,148 INFO L389 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrstr-alloca-2.i [2021-10-28 09:12:44,198 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:12:44,199 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:12:44,199 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:12:44,199 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:12:44,199 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:12:44,199 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:12:44,199 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:12:44,199 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:12:44,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 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 09:12:44,235 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 21 [2021-10-28 09:12:44,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:12:44,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:12:44,242 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 09:12:44,242 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:12:44,242 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:12:44,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 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 09:12:44,246 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 21 [2021-10-28 09:12:44,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:12:44,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:12:44,247 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 09:12:44,247 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:12:44,254 INFO L791 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 32#L555true assume !(main_~length1~0 < 1); 29#L555-2true assume !(main_~length2~0 < 1); 7#L558-1true call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 36#L564-3true [2021-10-28 09:12:44,254 INFO L793 eck$LassoCheckResult]: Loop: 36#L564-3true assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 24#L564-2true main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 36#L564-3true [2021-10-28 09:12:44,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2021-10-28 09:12:44,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:44,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266365618] [2021-10-28 09:12:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:44,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:44,366 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:12:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:44,398 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:12:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2021-10-28 09:12:44,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:44,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920963750] [2021-10-28 09:12:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:44,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:44,412 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:12:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:44,421 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:12:44,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2021-10-28 09:12:44,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:44,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214336916] [2021-10-28 09:12:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:44,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:44,455 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:12:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:44,478 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:12:44,863 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:12:44,863 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:12:44,863 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:12:44,864 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:12:44,864 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:12:44,864 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:44,864 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:12:44,864 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:12:44,864 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration1_Lasso [2021-10-28 09:12:44,865 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:12:44,865 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:12:44,885 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 09:12:44,890 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 09:12:44,893 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 09:12:45,037 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 09:12:45,040 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 09:12:45,043 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 09:12:45,046 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 09:12:45,049 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 09:12:45,054 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 09:12:45,056 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 09:12:45,060 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 09:12:45,066 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 09:12:45,069 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 09:12:45,072 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 09:12:45,075 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 09:12:45,078 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 09:12:45,417 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:12:45,421 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:12:45,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:45,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:45,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:45,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:12:45,435 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 09:12:45,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:45,448 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:12:45,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:45,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:45,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:45,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:12:45,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:12:45,460 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:45,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-28 09:12:45,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:45,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:45,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:45,499 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 09:12:45,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:45,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:12:45,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:45,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:45,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:45,509 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:12:45,509 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:12:45,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:12:45,520 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:45,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:45,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:45,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:45,553 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:45,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:12:45,559 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 09:12:45,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:45,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:12:45,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:45,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:45,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:45,571 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:12:45,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:12:45,594 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:45,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:45,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:45,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:45,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:45,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:12:45,622 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 09:12:45,631 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:45,631 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:45,631 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:45,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:45,638 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:12:45,639 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:12:45,653 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:45,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:45,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:45,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:45,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:45,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:12:45,689 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 09:12:45,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:45,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:45,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:45,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:45,708 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:12:45,708 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:12:45,726 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:12:45,782 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2021-10-28 09:12:45,782 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. [2021-10-28 09:12:45,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:45,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:45,806 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:45,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:12:45,818 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:12:45,840 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-28 09:12:45,840 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:12:45,840 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_1) = -1*ULTIMATE.start_main_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_1 Supporting invariants [1*v_rep(select #length ULTIMATE.start_main_#t~malloc22.base)_1 - 1*ULTIMATE.start_main_~length1~0 >= 0] [2021-10-28 09:12:45,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:45,895 INFO L297 tatePredicateManager]: 5 out of 7 supporting invariants were superfluous and have been removed [2021-10-28 09:12:45,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:45,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:12:45,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:46,001 WARN L261 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:12:46,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:46,060 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 09:12:46,084 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 09:12:46,086 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 09:12:46,207 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 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). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 96 states and 142 transitions. Complement of second has 8 states. [2021-10-28 09:12:46,208 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 09:12:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 09:12:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2021-10-28 09:12:46,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 96 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-28 09:12:46,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:12:46,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 96 transitions. Stem has 7 letters. Loop has 2 letters. [2021-10-28 09:12:46,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:12:46,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 96 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-28 09:12:46,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:12:46,218 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 96 states and 142 transitions. [2021-10-28 09:12:46,230 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 19 [2021-10-28 09:12:46,233 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 96 states to 32 states and 43 transitions. [2021-10-28 09:12:46,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-28 09:12:46,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-10-28 09:12:46,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 43 transitions. [2021-10-28 09:12:46,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:12:46,236 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 43 transitions. [2021-10-28 09:12:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 43 transitions. [2021-10-28 09:12:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-28 09:12:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.34375) internal successors, (43), 31 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 09:12:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2021-10-28 09:12:46,260 INFO L704 BuchiCegarLoop]: Abstraction has 32 states and 43 transitions. [2021-10-28 09:12:46,260 INFO L587 BuchiCegarLoop]: Abstraction has 32 states and 43 transitions. [2021-10-28 09:12:46,260 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:12:46,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 43 transitions. [2021-10-28 09:12:46,261 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 19 [2021-10-28 09:12:46,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:12:46,261 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:12:46,262 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:46,262 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:12:46,263 INFO L791 eck$LassoCheckResult]: Stem: 243#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 227#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 228#L555 assume !(main_~length1~0 < 1); 245#L555-2 assume !(main_~length2~0 < 1); 223#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 224#L564-3 assume !(main_~i~0 < main_~length1~0); 244#L564-4 main_~i~1 := 0; 235#L568-3 [2021-10-28 09:12:46,263 INFO L793 eck$LassoCheckResult]: Loop: 235#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 237#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 235#L568-3 [2021-10-28 09:12:46,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1806935662, now seen corresponding path program 1 times [2021-10-28 09:12:46,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:46,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100248529] [2021-10-28 09:12:46,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:46,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:46,317 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 09:12:46,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:46,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100248529] [2021-10-28 09:12:46,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100248529] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:12:46,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:12:46,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:12:46,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876568405] [2021-10-28 09:12:46,322 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:12:46,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:46,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2147, now seen corresponding path program 1 times [2021-10-28 09:12:46,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:46,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625185851] [2021-10-28 09:12:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:46,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:46,330 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:12:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:46,336 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:12:46,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:46,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:12:46,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:12:46,380 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 09:12:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:46,419 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-10-28 09:12:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:12:46,420 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2021-10-28 09:12:46,421 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 19 [2021-10-28 09:12:46,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 43 transitions. [2021-10-28 09:12:46,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-10-28 09:12:46,422 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-10-28 09:12:46,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 43 transitions. [2021-10-28 09:12:46,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:12:46,423 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-10-28 09:12:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 43 transitions. [2021-10-28 09:12:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-10-28 09:12:46,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.3125) internal successors, (42), 31 states have internal predecessors, (42), 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 09:12:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-10-28 09:12:46,426 INFO L704 BuchiCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-10-28 09:12:46,426 INFO L587 BuchiCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-10-28 09:12:46,426 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:12:46,426 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 42 transitions. [2021-10-28 09:12:46,427 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 19 [2021-10-28 09:12:46,427 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:12:46,427 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:12:46,427 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:46,428 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 09:12:46,428 INFO L791 eck$LassoCheckResult]: Stem: 315#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 299#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 300#L555 assume !(main_~length1~0 < 1); 317#L555-2 assume !(main_~length2~0 < 1); 293#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 294#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 312#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 313#L564-3 assume !(main_~i~0 < main_~length1~0); 316#L564-4 main_~i~1 := 0; 307#L568-3 [2021-10-28 09:12:46,428 INFO L793 eck$LassoCheckResult]: Loop: 307#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 309#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 307#L568-3 [2021-10-28 09:12:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1298440016, now seen corresponding path program 1 times [2021-10-28 09:12:46,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:46,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451315116] [2021-10-28 09:12:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:46,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:46,455 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:12:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:46,491 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:12:46,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2147, now seen corresponding path program 2 times [2021-10-28 09:12:46,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:46,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608065440] [2021-10-28 09:12:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:46,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:46,500 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:12:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:46,506 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:12:46,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2034626574, now seen corresponding path program 1 times [2021-10-28 09:12:46,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:46,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667196963] [2021-10-28 09:12:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:46,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:46,524 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:12:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:46,544 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:12:46,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:46,975 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:12:46,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:12:46,975 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:12:46,975 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:12:46,975 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:12:46,976 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:46,976 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:12:46,976 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:12:46,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration3_Lasso [2021-10-28 09:12:46,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:12:46,976 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:12:46,980 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 09:12:46,983 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 09:12:46,985 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 09:12:46,987 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 09:12:46,990 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 09:12:46,992 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 09:12:46,994 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 09:12:46,996 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 09:12:47,164 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 09:12:47,166 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 09:12:47,168 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 09:12:47,171 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 09:12:47,173 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 09:12:47,175 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 09:12:47,470 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:12:47,470 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:12:47,470 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:47,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:47,473 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:47,486 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 09:12:47,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:12:47,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:47,495 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:12:47,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:47,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:47,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:47,496 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:12:47,496 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:12:47,502 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:47,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:47,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:47,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:47,523 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:47,531 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 09:12:47,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:47,541 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:12:47,541 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:47,541 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:47,541 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:47,542 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:12:47,542 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:12:47,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:12:47,545 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:47,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-28 09:12:47,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:47,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:47,569 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:47,570 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 09:12:47,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:12:47,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:47,577 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:12:47,578 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:47,578 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:47,578 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:47,579 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:12:47,579 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:12:47,593 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:47,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-28 09:12:47,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:47,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:47,618 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:47,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:12:47,625 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 09:12:47,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:47,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:12:47,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:47,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:47,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:47,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:12:47,633 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:12:47,658 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:47,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:47,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:47,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:47,699 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:47,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:12:47,707 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 09:12:47,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:47,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:47,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:47,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:47,719 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:12:47,719 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:12:47,734 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:47,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:47,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:47,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:47,772 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:47,782 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 09:12:47,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:47,791 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:12:47,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:47,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:47,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:47,792 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:12:47,792 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:12:47,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:12:47,801 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:47,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-10-28 09:12:47,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:47,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:47,821 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:47,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 09:12:47,828 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 09:12:47,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:47,835 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:12:47,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:47,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:47,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:47,836 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:12:47,836 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:12:47,837 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:47,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-10-28 09:12:47,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:47,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:47,860 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:47,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:12:47,864 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 09:12:47,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:47,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:47,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:47,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:47,874 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:12:47,874 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:12:47,886 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:47,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-10-28 09:12:47,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:47,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:47,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:47,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:12:47,909 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 09:12:47,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:47,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:47,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:47,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:47,922 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:12:47,922 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:12:47,938 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:47,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:47,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:47,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:47,979 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:47,986 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 09:12:47,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:12:47,995 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:47,995 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:12:47,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:47,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:47,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:47,996 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:12:47,996 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:12:48,010 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:48,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:48,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:48,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:48,045 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:48,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 09:12:48,046 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 09:12:48,053 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:48,053 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:12:48,054 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:48,054 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:48,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:48,054 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:12:48,054 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:12:48,068 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:12:48,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:48,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:48,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:48,088 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:48,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 09:12:48,090 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 09:12:48,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:12:48,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:12:48,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:12:48,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:12:48,132 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:12:48,132 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:12:48,146 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:12:48,160 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-10-28 09:12:48,161 INFO L444 ModelExtractionUtils]: 21 out of 34 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-10-28 09:12:48,161 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:12:48,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:48,162 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:48,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 09:12:48,170 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:12:48,179 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 09:12:48,179 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:12:48,179 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1, ULTIMATE.start_main_~length2~0) = -1*ULTIMATE.start_main_~i~1 + 1*ULTIMATE.start_main_~length2~0 Supporting invariants [] [2021-10-28 09:12:48,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:48,221 INFO L297 tatePredicateManager]: 7 out of 7 supporting invariants were superfluous and have been removed [2021-10-28 09:12:48,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:48,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:12:48,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:48,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:12:48,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:48,316 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 09:12:48,317 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 09:12:48,317 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 42 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 09:12:48,337 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 42 transitions. cyclomatic complexity: 14. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) Result 55 states and 75 transitions. Complement of second has 6 states. [2021-10-28 09:12:48,337 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 09:12:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 09:12:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2021-10-28 09:12:48,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 9 letters. Loop has 2 letters. [2021-10-28 09:12:48,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:12:48,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 11 letters. Loop has 2 letters. [2021-10-28 09:12:48,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:12:48,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 9 letters. Loop has 4 letters. [2021-10-28 09:12:48,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:12:48,339 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 75 transitions. [2021-10-28 09:12:48,341 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 09:12:48,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 33 states and 44 transitions. [2021-10-28 09:12:48,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-28 09:12:48,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 09:12:48,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 44 transitions. [2021-10-28 09:12:48,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:12:48,342 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-10-28 09:12:48,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 44 transitions. [2021-10-28 09:12:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-28 09:12:48,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 32 states have internal predecessors, (44), 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 09:12:48,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2021-10-28 09:12:48,345 INFO L704 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-10-28 09:12:48,345 INFO L587 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-10-28 09:12:48,345 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:12:48,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 44 transitions. [2021-10-28 09:12:48,346 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 09:12:48,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:12:48,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:12:48,347 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:48,347 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:12:48,348 INFO L791 eck$LassoCheckResult]: Stem: 487#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 470#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 471#L555 assume !(main_~length1~0 < 1); 489#L555-2 assume !(main_~length2~0 < 1); 464#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 465#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 484#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 485#L564-3 assume !(main_~i~0 < main_~length1~0); 488#L564-4 main_~i~1 := 0; 478#L568-3 assume !(main_~i~1 < main_~length2~0); 479#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 486#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 476#L518-4 [2021-10-28 09:12:48,348 INFO L793 eck$LassoCheckResult]: Loop: 476#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 477#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 490#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 476#L518-4 [2021-10-28 09:12:48,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:48,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1351083894, now seen corresponding path program 1 times [2021-10-28 09:12:48,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:48,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919638753] [2021-10-28 09:12:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:48,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:12:48,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:48,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919638753] [2021-10-28 09:12:48,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919638753] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:12:48,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:12:48,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:12:48,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470958711] [2021-10-28 09:12:48,429 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:12:48,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:48,430 INFO L85 PathProgramCache]: Analyzing trace with hash 79603, now seen corresponding path program 1 times [2021-10-28 09:12:48,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:48,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715889986] [2021-10-28 09:12:48,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:48,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:48,436 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:12:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:48,460 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:12:48,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:48,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:12:48,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:12:48,498 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:48,523 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2021-10-28 09:12:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:12:48,524 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 44 transitions. [2021-10-28 09:12:48,529 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 09:12:48,530 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 44 transitions. [2021-10-28 09:12:48,530 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-28 09:12:48,530 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 09:12:48,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 44 transitions. [2021-10-28 09:12:48,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:12:48,530 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-10-28 09:12:48,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 44 transitions. [2021-10-28 09:12:48,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-28 09:12:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.303030303030303) internal successors, (43), 32 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 09:12:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-10-28 09:12:48,540 INFO L704 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-10-28 09:12:48,540 INFO L587 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-10-28 09:12:48,540 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:12:48,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 43 transitions. [2021-10-28 09:12:48,541 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 09:12:48,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:12:48,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:12:48,545 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:48,545 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:12:48,546 INFO L791 eck$LassoCheckResult]: Stem: 561#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 544#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 545#L555 assume !(main_~length1~0 < 1); 563#L555-2 assume !(main_~length2~0 < 1); 540#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 541#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 558#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 559#L564-3 assume !(main_~i~0 < main_~length1~0); 562#L564-4 main_~i~1 := 0; 553#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 554#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 555#L568-3 assume !(main_~i~1 < main_~length2~0); 556#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 560#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 550#L518-4 [2021-10-28 09:12:48,546 INFO L793 eck$LassoCheckResult]: Loop: 550#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 551#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 564#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 550#L518-4 [2021-10-28 09:12:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1313217428, now seen corresponding path program 1 times [2021-10-28 09:12:48,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:48,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290756770] [2021-10-28 09:12:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:48,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:12:48,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:48,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290756770] [2021-10-28 09:12:48,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290756770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:48,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401946095] [2021-10-28 09:12:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:48,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:48,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:48,798 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:48,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 09:12:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:48,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:12:48,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:49,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-10-28 09:12:49,198 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:12:49,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 43 [2021-10-28 09:12:49,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:12:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:12:49,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401946095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:49,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:12:49,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-28 09:12:49,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29497029] [2021-10-28 09:12:49,257 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:12:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash 79603, now seen corresponding path program 2 times [2021-10-28 09:12:49,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:49,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047828593] [2021-10-28 09:12:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:49,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:49,264 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:12:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:49,268 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:12:49,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:12:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:12:49,302 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. cyclomatic complexity: 14 Second operand has 12 states, 11 states have (on average 2.090909090909091) 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 09:12:49,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:49,498 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-10-28 09:12:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:12:49,498 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 48 transitions. [2021-10-28 09:12:49,499 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 09:12:49,501 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 36 states and 46 transitions. [2021-10-28 09:12:49,502 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-28 09:12:49,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 09:12:49,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2021-10-28 09:12:49,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:12:49,504 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-10-28 09:12:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2021-10-28 09:12:49,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-10-28 09:12:49,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 34 states have internal predecessors, (45), 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 09:12:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-10-28 09:12:49,509 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-10-28 09:12:49,509 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-10-28 09:12:49,509 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:12:49,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2021-10-28 09:12:49,511 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 09:12:49,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:12:49,511 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:12:49,513 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:49,513 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:12:49,513 INFO L791 eck$LassoCheckResult]: Stem: 695#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 677#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 678#L555 assume !(main_~length1~0 < 1); 697#L555-2 assume !(main_~length2~0 < 1); 673#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 674#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 691#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 692#L564-3 assume !(main_~i~0 < main_~length1~0); 696#L564-4 main_~i~1 := 0; 685#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 686#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 687#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 688#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 699#L568-3 assume !(main_~i~1 < main_~length2~0); 693#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 694#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 683#L518-4 [2021-10-28 09:12:49,514 INFO L793 eck$LassoCheckResult]: Loop: 683#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 684#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 698#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 683#L518-4 [2021-10-28 09:12:49,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash -716718030, now seen corresponding path program 2 times [2021-10-28 09:12:49,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:49,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816794991] [2021-10-28 09:12:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:49,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:49,560 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:12:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:49,600 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:12:49,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:49,601 INFO L85 PathProgramCache]: Analyzing trace with hash 79603, now seen corresponding path program 3 times [2021-10-28 09:12:49,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:49,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782943594] [2021-10-28 09:12:49,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:49,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:49,606 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:12:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:12:49,615 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:12:49,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:49,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1464353502, now seen corresponding path program 1 times [2021-10-28 09:12:49,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:49,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936737747] [2021-10-28 09:12:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:49,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:50,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:50,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936737747] [2021-10-28 09:12:50,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936737747] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:50,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179359206] [2021-10-28 09:12:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:50,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:50,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:50,051 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:50,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:12:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:50,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 09:12:50,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:50,307 INFO L354 Elim1Store]: treesize reduction 40, result has 20.0 percent of original size [2021-10-28 09:12:50,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 27 [2021-10-28 09:13:10,033 WARN L207 SmtUtils]: Spent 12.03 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-28 09:13:24,615 WARN L207 SmtUtils]: Spent 12.01 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-28 09:13:24,664 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-10-28 09:13:24,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 19 [2021-10-28 09:13:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:13:24,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179359206] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:24,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:13:24,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2021-10-28 09:13:24,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44842251] [2021-10-28 09:13:24,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:24,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 09:13:24,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=342, Unknown=2, NotChecked=0, Total=420 [2021-10-28 09:13:24,744 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. cyclomatic complexity: 14 Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 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 09:13:49,153 WARN L207 SmtUtils]: Spent 24.05 s on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-10-28 09:14:13,244 WARN L207 SmtUtils]: Spent 24.04 s on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-10-28 09:14:37,351 WARN L207 SmtUtils]: Spent 24.06 s on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2021-10-28 09:14:49,420 WARN L207 SmtUtils]: Spent 12.04 s on a formula simplification that was a NOOP. DAG size: 31 [2021-10-28 09:15:01,470 WARN L207 SmtUtils]: Spent 12.02 s on a formula simplification that was a NOOP. DAG size: 39 [2021-10-28 09:15:13,522 WARN L207 SmtUtils]: Spent 12.02 s on a formula simplification that was a NOOP. DAG size: 41 [2021-10-28 09:15:13,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:15:13,622 INFO L93 Difference]: Finished difference Result 111 states and 141 transitions. [2021-10-28 09:15:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-28 09:15:13,622 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 141 transitions. [2021-10-28 09:15:13,624 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 62 [2021-10-28 09:15:13,626 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 111 states and 141 transitions. [2021-10-28 09:15:13,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2021-10-28 09:15:13,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2021-10-28 09:15:13,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2021-10-28 09:15:13,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:15:13,627 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 141 transitions. [2021-10-28 09:15:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2021-10-28 09:15:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 41. [2021-10-28 09:15:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 40 states have internal predecessors, (52), 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 09:15:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-10-28 09:15:13,632 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-10-28 09:15:13,632 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-10-28 09:15:13,632 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:15:13,632 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 52 transitions. [2021-10-28 09:15:13,633 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-28 09:15:13,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:15:13,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:15:13,634 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:13,634 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:15:13,634 INFO L791 eck$LassoCheckResult]: Stem: 955#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 937#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 938#L555 assume !(main_~length1~0 < 1); 957#L555-2 assume !(main_~length2~0 < 1); 931#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 932#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 951#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 952#L564-3 assume !(main_~i~0 < main_~length1~0); 956#L564-4 main_~i~1 := 0; 945#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 946#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 947#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 948#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 965#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 964#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 963#L568-3 assume !(main_~i~1 < main_~length2~0); 962#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 961#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 959#L518-4 [2021-10-28 09:15:13,634 INFO L793 eck$LassoCheckResult]: Loop: 959#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 960#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 958#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 959#L518-4 [2021-10-28 09:15:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1569540784, now seen corresponding path program 3 times [2021-10-28 09:15:13,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:13,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624143547] [2021-10-28 09:15:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:13,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:13,652 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:13,672 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:13,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:13,673 INFO L85 PathProgramCache]: Analyzing trace with hash 79603, now seen corresponding path program 4 times [2021-10-28 09:15:13,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:13,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645371517] [2021-10-28 09:15:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:13,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:13,677 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:13,681 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:13,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:13,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1119505220, now seen corresponding path program 2 times [2021-10-28 09:15:13,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:13,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584360148] [2021-10-28 09:15:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:13,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:13,699 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:13,720 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:16,370 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:15:16,370 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:15:16,370 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:15:16,370 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:15:16,370 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:15:16,370 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:16,370 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:15:16,370 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:15:16,370 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration7_Lasso [2021-10-28 09:15:16,370 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:15:16,370 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:15:16,376 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 09:15:16,382 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 09:15:16,384 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 09:15:16,387 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 09:15:16,388 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 09:15:16,390 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 09:15:16,392 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 09:15:16,394 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 09:15:16,396 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 09:15:16,397 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 09:15:16,399 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 09:15:16,401 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 09:15:16,403 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 09:15:16,405 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 09:15:16,407 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 09:15:16,919 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 09:15:16,922 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 09:15:16,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:15:16,928 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 09:15:16,930 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 09:15:16,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:15:16,934 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 09:15:16,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:15:16,948 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 09:15:16,950 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 09:15:16,951 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 09:15:16,953 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 09:15:16,955 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 09:15:16,957 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 09:15:16,959 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 09:15:16,961 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 09:15:16,963 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 09:15:16,965 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 09:15:17,655 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:15:17,655 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:15:17,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:17,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:17,667 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:17,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 09:15:17,669 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 09:15:17,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:17,676 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:17,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:17,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:17,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:17,676 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:17,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:17,679 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:17,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:17,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:17,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:17,700 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:17,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 09:15:17,701 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 09:15:17,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:17,708 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:17,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:17,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:17,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:17,709 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:17,709 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:17,710 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:17,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:17,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:17,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:17,731 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:17,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 09:15:17,732 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 09:15:17,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:17,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:17,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:17,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:17,741 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:15:17,741 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:15:17,744 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:17,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:17,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:17,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:17,764 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:17,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 09:15:17,766 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 09:15:17,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:17,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:17,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:17,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:17,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:17,773 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:17,773 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:17,774 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:17,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:17,794 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:17,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:17,795 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:17,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 09:15:17,796 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:15:17,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:17,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:17,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:17,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:17,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:17,805 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:17,805 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:17,807 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:17,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:17,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:17,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:17,827 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:17,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 09:15:17,831 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 09:15:17,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:17,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:17,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:17,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:17,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:17,839 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:17,839 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:17,840 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:17,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:17,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:17,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:17,868 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:17,871 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 09:15:17,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 09:15:17,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:17,878 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:17,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:17,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:17,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:17,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:17,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:17,880 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:17,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:17,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:17,900 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:17,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 09:15:17,901 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 09:15:17,908 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:17,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:17,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:17,909 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:17,910 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:15:17,910 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:15:17,918 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:17,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:17,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:17,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:17,939 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:17,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 09:15:17,942 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 09:15:17,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:17,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:17,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:17,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:17,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:17,950 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:17,950 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:17,951 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:17,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:17,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:17,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:17,971 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:18,004 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 09:15:18,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:18,013 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:18,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:18,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:18,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:18,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:18,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:18,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 09:15:18,030 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:18,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:18,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:18,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:18,067 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:18,071 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 09:15:18,080 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:18,080 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:18,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:18,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:18,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:18,081 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:18,081 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:18,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 09:15:18,082 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:18,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:18,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:18,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:18,102 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:18,108 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 09:15:18,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:18,117 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:18,117 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:18,117 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:18,117 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:18,117 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:18,118 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:18,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 09:15:18,130 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:18,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:18,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:18,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:18,155 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:18,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 09:15:18,156 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 09:15:18,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:18,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:18,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:18,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:18,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:18,164 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:18,164 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:18,165 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:18,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:18,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:18,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:18,185 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:18,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 09:15:18,187 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 09:15:18,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:18,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:15:18,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:18,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:18,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:18,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:15:18,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:15:18,196 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:18,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:18,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:18,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:18,217 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:18,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 09:15:18,225 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 09:15:18,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:18,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:18,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:18,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:18,254 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:15:18,255 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:15:18,286 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:15:18,346 INFO L443 ModelExtractionUtils]: Simplification made 15 calls to the SMT solver. [2021-10-28 09:15:18,346 INFO L444 ModelExtractionUtils]: 14 out of 64 variables were initially zero. Simplification set additionally 47 variables to zero. [2021-10-28 09:15:18,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:18,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:18,352 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:18,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 09:15:18,353 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:15:18,379 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 09:15:18,380 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:15:18,380 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~nondetString2~0.base)_2, ULTIMATE.start_cstrlen_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_~nondetString2~0.base)_2 - 1*ULTIMATE.start_cstrlen_~s~0.offset Supporting invariants [] [2021-10-28 09:15:18,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:18,495 INFO L297 tatePredicateManager]: 21 out of 22 supporting invariants were superfluous and have been removed [2021-10-28 09:15:18,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:18,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:15:18,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:18,624 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:15:18,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:18,657 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 09:15:18,657 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2021-10-28 09:15:18,658 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 52 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 09:15:18,710 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 52 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) Result 61 states and 80 transitions. Complement of second has 5 states. [2021-10-28 09:15:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:15:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 09:15:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2021-10-28 09:15:18,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 18 letters. Loop has 3 letters. [2021-10-28 09:15:18,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:15:18,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 21 letters. Loop has 3 letters. [2021-10-28 09:15:18,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:15:18,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 41 transitions. Stem has 18 letters. Loop has 6 letters. [2021-10-28 09:15:18,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:15:18,712 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 80 transitions. [2021-10-28 09:15:18,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 09:15:18,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 43 states and 55 transitions. [2021-10-28 09:15:18,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-10-28 09:15:18,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-10-28 09:15:18,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 55 transitions. [2021-10-28 09:15:18,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:15:18,714 INFO L681 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-10-28 09:15:18,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 55 transitions. [2021-10-28 09:15:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-10-28 09:15:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 41 states have internal predecessors, (54), 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 09:15:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2021-10-28 09:15:18,717 INFO L704 BuchiCegarLoop]: Abstraction has 42 states and 54 transitions. [2021-10-28 09:15:18,717 INFO L587 BuchiCegarLoop]: Abstraction has 42 states and 54 transitions. [2021-10-28 09:15:18,717 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 09:15:18,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 54 transitions. [2021-10-28 09:15:18,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 09:15:18,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:15:18,718 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:15:18,719 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:18,719 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:18,719 INFO L791 eck$LassoCheckResult]: Stem: 1239#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1218#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 1219#L555 assume !(main_~length1~0 < 1); 1241#L555-2 assume !(main_~length2~0 < 1); 1214#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 1215#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 1235#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 1236#L564-3 assume !(main_~i~0 < main_~length1~0); 1240#L564-4 main_~i~1 := 0; 1228#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1229#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1247#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1246#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1245#L568-3 assume !(main_~i~1 < main_~length2~0); 1237#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 1238#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 1224#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 1225#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 1212#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 1213#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 1220#L542-4 [2021-10-28 09:15:18,719 INFO L793 eck$LassoCheckResult]: Loop: 1220#L542-4 goto; 1233#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 1216#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 1217#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 1234#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 1206#L525 assume 0 == cstrncmp_~n;cstrncmp_#res := 0; 1207#L533 cstrstr_#t~ret16 := cstrncmp_#res; 1222#L542-2 assume !!(0 != cstrstr_#t~ret16);havoc cstrstr_#t~ret16; 1220#L542-4 [2021-10-28 09:15:18,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:18,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1849679959, now seen corresponding path program 1 times [2021-10-28 09:15:18,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:18,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823306718] [2021-10-28 09:15:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:18,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:18,734 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:18,752 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:18,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:18,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1079765744, now seen corresponding path program 1 times [2021-10-28 09:15:18,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:18,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630144934] [2021-10-28 09:15:18,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:18,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:18,771 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 09:15:18,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:15:18,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630144934] [2021-10-28 09:15:18,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630144934] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:15:18,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:15:18,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:15:18,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294328984] [2021-10-28 09:15:18,772 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:15:18,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:15:18,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:15:18,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:15:18,773 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. cyclomatic complexity: 16 Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 09:15:18,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:15:18,817 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-10-28 09:15:18,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:15:18,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2021-10-28 09:15:18,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 09:15:18,818 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 41 states and 50 transitions. [2021-10-28 09:15:18,818 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-10-28 09:15:18,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-10-28 09:15:18,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 50 transitions. [2021-10-28 09:15:18,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:15:18,819 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 50 transitions. [2021-10-28 09:15:18,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 50 transitions. [2021-10-28 09:15:18,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-28 09:15:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 40 states have internal predecessors, (50), 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 09:15:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2021-10-28 09:15:18,821 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 50 transitions. [2021-10-28 09:15:18,821 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 50 transitions. [2021-10-28 09:15:18,822 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 09:15:18,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 50 transitions. [2021-10-28 09:15:18,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 09:15:18,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:15:18,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:15:18,823 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:18,823 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:18,823 INFO L791 eck$LassoCheckResult]: Stem: 1332#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1311#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 1312#L555 assume !(main_~length1~0 < 1); 1334#L555-2 assume !(main_~length2~0 < 1); 1305#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 1306#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 1328#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 1329#L564-3 assume !(main_~i~0 < main_~length1~0); 1333#L564-4 main_~i~1 := 0; 1323#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1324#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1325#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1326#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1341#L568-3 assume !(main_~i~1 < main_~length2~0); 1330#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 1331#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 1318#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 1319#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 1307#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 1308#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 1313#L542-4 [2021-10-28 09:15:18,823 INFO L793 eck$LassoCheckResult]: Loop: 1313#L542-4 goto; 1322#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 1309#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 1310#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 1327#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 1301#L525 assume !(0 == cstrncmp_~n); 1302#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 1316#L528 assume cstrncmp_#t~mem6 != cstrncmp_#t~mem7;havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;call cstrncmp_#t~mem9 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;call cstrncmp_#t~mem10 := read~int(cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, 1);cstrncmp_#res := cstrncmp_#t~mem9 % 256 - cstrncmp_#t~mem10 % 256;havoc cstrncmp_#t~mem9;havoc cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset;havoc cstrncmp_#t~mem10; 1317#L533 cstrstr_#t~ret16 := cstrncmp_#res; 1315#L542-2 assume !!(0 != cstrstr_#t~ret16);havoc cstrstr_#t~ret16; 1313#L542-4 [2021-10-28 09:15:18,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:18,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1849679959, now seen corresponding path program 2 times [2021-10-28 09:15:18,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:18,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690492727] [2021-10-28 09:15:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:18,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:18,837 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:18,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-10-28 09:15:18,875 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:18,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:18,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1728347221, now seen corresponding path program 1 times [2021-10-28 09:15:18,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:18,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943307534] [2021-10-28 09:15:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:18,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:18,889 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:18,902 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1941989675, now seen corresponding path program 1 times [2021-10-28 09:15:18,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:18,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021116816] [2021-10-28 09:15:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:18,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:15:19,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:15:19,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021116816] [2021-10-28 09:15:19,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021116816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:19,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917434664] [2021-10-28 09:15:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:19,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:15:19,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:19,032 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:15:19,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-28 09:15:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:19,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:15:19,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 09:15:19,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917434664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:15:19,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:15:19,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-28 09:15:19,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511977844] [2021-10-28 09:15:19,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:15:19,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:15:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:15:19,735 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. cyclomatic complexity: 13 Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:15:19,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:15:19,795 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2021-10-28 09:15:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:15:19,795 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 61 transitions. [2021-10-28 09:15:19,796 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 09:15:19,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 50 states and 59 transitions. [2021-10-28 09:15:19,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-28 09:15:19,797 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-28 09:15:19,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 59 transitions. [2021-10-28 09:15:19,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:15:19,797 INFO L681 BuchiCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-28 09:15:19,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 59 transitions. [2021-10-28 09:15:19,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-10-28 09:15:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.1875) internal successors, (57), 47 states have internal predecessors, (57), 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 09:15:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2021-10-28 09:15:19,800 INFO L704 BuchiCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-10-28 09:15:19,801 INFO L587 BuchiCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-10-28 09:15:19,801 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 09:15:19,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 57 transitions. [2021-10-28 09:15:19,801 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 09:15:19,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:15:19,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:15:19,802 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:19,802 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:15:19,802 INFO L791 eck$LassoCheckResult]: Stem: 1536#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1514#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 1515#L555 assume !(main_~length1~0 < 1); 1539#L555-2 assume !(main_~length2~0 < 1); 1508#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 1509#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 1532#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 1533#L564-3 assume !(main_~i~0 < main_~length1~0); 1537#L564-4 main_~i~1 := 0; 1527#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1528#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1529#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1530#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1551#L568-3 assume !(main_~i~1 < main_~length2~0); 1550#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 1540#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 1522#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 1523#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 1510#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 1511#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 1516#L542-4 goto; 1531#L543-2 [2021-10-28 09:15:19,802 INFO L793 eck$LassoCheckResult]: Loop: 1531#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 1512#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 1513#L543 assume !!(cstrstr_~sc~0 != cstrstr_~c~0); 1531#L543-2 [2021-10-28 09:15:19,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:19,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1505503948, now seen corresponding path program 1 times [2021-10-28 09:15:19,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:19,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383549909] [2021-10-28 09:15:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:19,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:19,816 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:19,832 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash 99467, now seen corresponding path program 1 times [2021-10-28 09:15:19,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:19,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404721380] [2021-10-28 09:15:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:19,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:19,837 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:19,839 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:19,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:19,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1875287584, now seen corresponding path program 1 times [2021-10-28 09:15:19,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:19,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731392018] [2021-10-28 09:15:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:19,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:15:20,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:15:20,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731392018] [2021-10-28 09:15:20,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731392018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:20,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58762281] [2021-10-28 09:15:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:20,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:15:20,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:20,054 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:15:20,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-28 09:15:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:20,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-28 09:15:20,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:20,435 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-28 09:15:20,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 32 [2021-10-28 09:15:20,763 INFO L354 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2021-10-28 09:15:20,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 38 [2021-10-28 09:15:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:15:20,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58762281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:20,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:15:20,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-28 09:15:20,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180745802] [2021-10-28 09:15:20,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:15:20,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:15:20,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:15:20,847 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. cyclomatic complexity: 14 Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 09:15:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:15:21,038 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2021-10-28 09:15:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:15:21,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 92 transitions. [2021-10-28 09:15:21,045 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 09:15:21,046 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 51 states and 60 transitions. [2021-10-28 09:15:21,046 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-28 09:15:21,046 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-28 09:15:21,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 60 transitions. [2021-10-28 09:15:21,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:15:21,046 INFO L681 BuchiCegarLoop]: Abstraction has 51 states and 60 transitions. [2021-10-28 09:15:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 60 transitions. [2021-10-28 09:15:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-10-28 09:15:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 50 states have (on average 1.18) internal successors, (59), 49 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 09:15:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-10-28 09:15:21,049 INFO L704 BuchiCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-28 09:15:21,050 INFO L587 BuchiCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-28 09:15:21,050 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 09:15:21,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 59 transitions. [2021-10-28 09:15:21,050 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 09:15:21,050 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:15:21,050 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:15:21,051 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:21,051 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:15:21,051 INFO L791 eck$LassoCheckResult]: Stem: 1760#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1738#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 1739#L555 assume !(main_~length1~0 < 1); 1763#L555-2 assume !(main_~length2~0 < 1); 1734#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 1735#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 1756#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 1757#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 1766#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 1774#L564-3 assume !(main_~i~0 < main_~length1~0); 1761#L564-4 main_~i~1 := 0; 1750#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1751#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1752#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 1753#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 1772#L568-3 assume !(main_~i~1 < main_~length2~0); 1758#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 1759#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 1745#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 1746#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 1777#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 1776#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 1775#L542-4 goto; 1755#L543-2 [2021-10-28 09:15:21,051 INFO L793 eck$LassoCheckResult]: Loop: 1755#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 1736#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 1737#L543 assume !!(cstrstr_~sc~0 != cstrstr_~c~0); 1755#L543-2 [2021-10-28 09:15:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1779363886, now seen corresponding path program 2 times [2021-10-28 09:15:21,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:21,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126731626] [2021-10-28 09:15:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:21,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:21,078 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:21,094 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:21,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash 99467, now seen corresponding path program 2 times [2021-10-28 09:15:21,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:21,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385929193] [2021-10-28 09:15:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:21,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:21,099 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:21,102 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:21,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash 543230270, now seen corresponding path program 2 times [2021-10-28 09:15:21,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:21,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780310368] [2021-10-28 09:15:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:21,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:21,117 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:21,134 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:23,466 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:15:23,466 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:15:23,466 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:15:23,466 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:15:23,466 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:15:23,466 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:23,466 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:15:23,466 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:15:23,467 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration11_Lasso [2021-10-28 09:15:23,467 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:15:23,467 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:15:23,470 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 09:15:24,003 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 09:15:24,005 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 09:15:24,007 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 09:15:24,008 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 09:15:24,010 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 09:15:24,012 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 09:15:24,013 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 09:15:24,015 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 09:15:24,016 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 09:15:24,018 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 09:15:24,020 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 09:15:24,022 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 09:15:24,023 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 09:15:24,025 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 09:15:24,026 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 09:15:24,028 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 09:15:24,029 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 09:15:24,031 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 09:15:24,033 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 09:15:24,034 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 09:15:24,036 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 09:15:24,037 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 09:15:24,041 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 09:15:24,044 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 09:15:24,045 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 09:15:24,047 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 09:15:24,048 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 09:15:24,050 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 09:15:24,052 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 09:15:24,712 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:15:24,712 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:15:24,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:24,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:24,714 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:24,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 09:15:24,716 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 09:15:24,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:24,723 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:24,723 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:24,723 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:24,724 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:15:24,725 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:15:24,727 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:15:24,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:24,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:24,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:24,750 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:24,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 09:15:24,752 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 09:15:24,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:15:24,760 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:15:24,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:15:24,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:15:24,774 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:15:24,774 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:15:24,803 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:15:24,825 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-10-28 09:15:24,825 INFO L444 ModelExtractionUtils]: 55 out of 70 variables were initially zero. Simplification set additionally 12 variables to zero. [2021-10-28 09:15:24,826 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:15:24,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:24,827 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:15:24,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 09:15:24,828 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:15:24,835 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 09:15:24,836 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:15:24,836 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrstr_~s.offset, v_rep(select #length ULTIMATE.start_cstrstr_~s.base)_1) = -1*ULTIMATE.start_cstrstr_~s.offset + 1*v_rep(select #length ULTIMATE.start_cstrstr_~s.base)_1 Supporting invariants [] [2021-10-28 09:15:24,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:24,931 INFO L297 tatePredicateManager]: 26 out of 26 supporting invariants were superfluous and have been removed [2021-10-28 09:15:24,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:24,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:15:24,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:25,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:15:25,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:25,095 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 09:15:25,096 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 09:15:25,096 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 59 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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 09:15:25,113 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 59 transitions. cyclomatic complexity: 14. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) Result 67 states and 78 transitions. Complement of second has 4 states. [2021-10-28 09:15:25,113 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 09:15:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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 09:15:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2021-10-28 09:15:25,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 39 transitions. Stem has 23 letters. Loop has 3 letters. [2021-10-28 09:15:25,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:15:25,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 39 transitions. Stem has 26 letters. Loop has 3 letters. [2021-10-28 09:15:25,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:15:25,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 39 transitions. Stem has 23 letters. Loop has 6 letters. [2021-10-28 09:15:25,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:15:25,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 67 states and 78 transitions. [2021-10-28 09:15:25,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:15:25,117 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 67 states to 50 states and 58 transitions. [2021-10-28 09:15:25,117 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-10-28 09:15:25,117 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 09:15:25,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 58 transitions. [2021-10-28 09:15:25,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:15:25,117 INFO L681 BuchiCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-10-28 09:15:25,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 58 transitions. [2021-10-28 09:15:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-28 09:15:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 50 states have (on average 1.16) internal successors, (58), 49 states have internal predecessors, (58), 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 09:15:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-10-28 09:15:25,120 INFO L704 BuchiCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-10-28 09:15:25,120 INFO L587 BuchiCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-10-28 09:15:25,120 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 09:15:25,120 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 58 transitions. [2021-10-28 09:15:25,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:15:25,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:15:25,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:15:25,121 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:25,121 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 09:15:25,122 INFO L791 eck$LassoCheckResult]: Stem: 2088#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2062#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 2063#L555 assume !(main_~length1~0 < 1); 2090#L555-2 assume !(main_~length2~0 < 1); 2055#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 2056#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2084#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2085#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2092#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2093#L564-3 assume !(main_~i~0 < main_~length1~0); 2089#L564-4 main_~i~1 := 0; 2076#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2077#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2078#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2079#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2096#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2095#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2094#L568-3 assume !(main_~i~1 < main_~length2~0); 2086#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 2087#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 2072#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2073#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2091#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 2074#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2075#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2057#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 2058#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 2064#L542-4 goto; 2080#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 2059#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 2061#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 2082#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 2047#L525 assume !(0 == cstrncmp_~n); 2048#L527-4 [2021-10-28 09:15:25,122 INFO L793 eck$LassoCheckResult]: Loop: 2048#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 2069#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 2065#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 2051#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 2052#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 2048#L527-4 [2021-10-28 09:15:25,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash 577420407, now seen corresponding path program 1 times [2021-10-28 09:15:25,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:25,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637119727] [2021-10-28 09:15:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:25,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:25,165 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:25,207 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:25,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:25,208 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 1 times [2021-10-28 09:15:25,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:25,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950348194] [2021-10-28 09:15:25,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:25,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:25,217 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:25,222 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:25,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1867951025, now seen corresponding path program 1 times [2021-10-28 09:15:25,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:25,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400660083] [2021-10-28 09:15:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:25,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:25,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-28 09:15:25,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:15:25,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400660083] [2021-10-28 09:15:25,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400660083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:25,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484379249] [2021-10-28 09:15:25,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:25,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:15:25,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:25,355 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:15:25,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-28 09:15:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:25,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:15:25,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:25,697 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-28 09:15:25,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484379249] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:25,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:15:25,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 09:15:25,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047766545] [2021-10-28 09:15:25,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:15:25,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:15:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:15:25,880 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. cyclomatic complexity: 13 Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 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 09:15:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:15:25,992 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2021-10-28 09:15:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:15:25,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 99 transitions. [2021-10-28 09:15:25,993 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:15:25,993 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 55 states and 63 transitions. [2021-10-28 09:15:25,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-28 09:15:25,994 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 09:15:25,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 63 transitions. [2021-10-28 09:15:25,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:15:25,994 INFO L681 BuchiCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-28 09:15:25,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 63 transitions. [2021-10-28 09:15:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-10-28 09:15:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 53 states have (on average 1.150943396226415) internal successors, (61), 52 states have internal predecessors, (61), 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 09:15:25,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-10-28 09:15:25,997 INFO L704 BuchiCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-10-28 09:15:25,997 INFO L587 BuchiCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-10-28 09:15:25,997 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-28 09:15:25,997 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 53 states and 61 transitions. [2021-10-28 09:15:25,997 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:15:25,997 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:15:25,997 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:15:25,998 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:25,998 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 09:15:25,999 INFO L791 eck$LassoCheckResult]: Stem: 2357#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2331#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 2332#L555 assume !(main_~length1~0 < 1); 2359#L555-2 assume !(main_~length2~0 < 1); 2324#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 2325#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2353#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2354#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2361#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2365#L564-3 assume !(main_~i~0 < main_~length1~0); 2358#L564-4 main_~i~1 := 0; 2347#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2348#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2349#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2350#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2368#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2367#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2366#L568-3 assume !(main_~i~1 < main_~length2~0); 2355#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 2356#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 2341#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2342#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2360#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 2343#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2344#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2363#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 2364#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2362#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2326#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 2327#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 2333#L542-4 goto; 2345#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 2328#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 2330#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 2351#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 2316#L525 assume !(0 == cstrncmp_~n); 2317#L527-4 [2021-10-28 09:15:25,999 INFO L793 eck$LassoCheckResult]: Loop: 2317#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 2338#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 2334#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 2320#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 2321#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 2317#L527-4 [2021-10-28 09:15:25,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:25,999 INFO L85 PathProgramCache]: Analyzing trace with hash 609290751, now seen corresponding path program 2 times [2021-10-28 09:15:25,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:25,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482761556] [2021-10-28 09:15:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:26,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:15:26,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:15:26,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482761556] [2021-10-28 09:15:26,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482761556] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:26,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359100552] [2021-10-28 09:15:26,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:15:26,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:15:26,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:26,141 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:15:26,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-28 09:15:26,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:15:26,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:15:26,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 09:15:26,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:26,374 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 09:15:26,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-28 09:15:26,712 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:15:26,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-28 09:15:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:15:26,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359100552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:26,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:15:26,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-10-28 09:15:26,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837323228] [2021-10-28 09:15:26,741 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:15:26,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 2 times [2021-10-28 09:15:26,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:26,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206670260] [2021-10-28 09:15:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:26,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:26,749 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:26,753 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:26,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:15:26,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:15:26,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:15:26,943 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. cyclomatic complexity: 13 Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 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 09:15:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:15:27,266 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2021-10-28 09:15:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:15:27,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 73 transitions. [2021-10-28 09:15:27,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:15:27,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 56 states and 64 transitions. [2021-10-28 09:15:27,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-28 09:15:27,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 09:15:27,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 64 transitions. [2021-10-28 09:15:27,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:15:27,269 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-10-28 09:15:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 64 transitions. [2021-10-28 09:15:27,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2021-10-28 09:15:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 54 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 09:15:27,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-10-28 09:15:27,272 INFO L704 BuchiCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-28 09:15:27,272 INFO L587 BuchiCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-28 09:15:27,272 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-28 09:15:27,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 63 transitions. [2021-10-28 09:15:27,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:15:27,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:15:27,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:15:27,274 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:27,274 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 09:15:27,274 INFO L791 eck$LassoCheckResult]: Stem: 2618#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2592#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 2593#L555 assume !(main_~length1~0 < 1); 2620#L555-2 assume !(main_~length2~0 < 1); 2585#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 2586#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2614#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2615#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2623#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2627#L564-3 assume !(main_~i~0 < main_~length1~0); 2619#L564-4 main_~i~1 := 0; 2608#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2609#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2610#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2611#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2622#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2631#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2630#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2629#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2628#L568-3 assume !(main_~i~1 < main_~length2~0); 2616#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 2617#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 2602#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2603#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2621#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 2604#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2605#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2626#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 2625#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 2624#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2587#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 2588#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 2594#L542-4 goto; 2606#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 2589#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 2591#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 2612#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 2577#L525 assume !(0 == cstrncmp_~n); 2578#L527-4 [2021-10-28 09:15:27,274 INFO L793 eck$LassoCheckResult]: Loop: 2578#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 2599#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 2595#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 2581#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 2582#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 2578#L527-4 [2021-10-28 09:15:27,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:27,275 INFO L85 PathProgramCache]: Analyzing trace with hash -679136227, now seen corresponding path program 3 times [2021-10-28 09:15:27,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:27,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592545086] [2021-10-28 09:15:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:27,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:27,296 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:27,319 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:27,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:27,320 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 3 times [2021-10-28 09:15:27,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:27,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352648817] [2021-10-28 09:15:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:27,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:27,336 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:15:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:15:27,341 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:15:27,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash 108202955, now seen corresponding path program 2 times [2021-10-28 09:15:27,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:27,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527993544] [2021-10-28 09:15:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:27,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:15:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 09:15:27,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:15:27,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527993544] [2021-10-28 09:15:27,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527993544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:27,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611802833] [2021-10-28 09:15:27,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:15:27,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:15:27,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:27,849 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:15:27,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-28 09:15:28,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:15:28,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:15:28,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 100 conjunts are in the unsatisfiable core [2021-10-28 09:15:28,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:28,088 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 09:15:28,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-28 09:15:28,541 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-28 09:15:28,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 28 [2021-10-28 09:15:29,140 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:15:29,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2021-10-28 09:15:30,349 INFO L354 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2021-10-28 09:15:30,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 25 [2021-10-28 09:15:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 09:15:30,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611802833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:30,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:15:30,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 31 [2021-10-28 09:15:30,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254782816] [2021-10-28 09:15:30,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:15:30,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-28 09:15:30,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=845, Unknown=1, NotChecked=0, Total=930 [2021-10-28 09:15:30,536 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. cyclomatic complexity: 13 Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 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 09:15:45,252 WARN L207 SmtUtils]: Spent 13.54 s on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-10-28 09:16:49,869 WARN L207 SmtUtils]: Spent 1.07 m on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2021-10-28 09:16:50,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:16:50,300 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2021-10-28 09:16:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:16:50,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 135 transitions. [2021-10-28 09:16:50,301 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-10-28 09:16:50,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 115 states and 130 transitions. [2021-10-28 09:16:50,302 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-10-28 09:16:50,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-10-28 09:16:50,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 130 transitions. [2021-10-28 09:16:50,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:16:50,303 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 130 transitions. [2021-10-28 09:16:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 130 transitions. [2021-10-28 09:16:50,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2021-10-28 09:16:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.1379310344827587) internal successors, (99), 86 states have internal predecessors, (99), 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 09:16:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2021-10-28 09:16:50,307 INFO L704 BuchiCegarLoop]: Abstraction has 87 states and 99 transitions. [2021-10-28 09:16:50,307 INFO L587 BuchiCegarLoop]: Abstraction has 87 states and 99 transitions. [2021-10-28 09:16:50,307 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-28 09:16:50,307 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 99 transitions. [2021-10-28 09:16:50,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:16:50,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:16:50,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:16:50,309 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:16:50,309 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 09:16:50,309 INFO L791 eck$LassoCheckResult]: Stem: 2991#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2962#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 2963#L555 assume !(main_~length1~0 < 1); 2994#L555-2 assume !(main_~length2~0 < 1); 2958#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 2959#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3000#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3001#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3002#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3034#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 2987#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 2988#L564-3 assume !(main_~i~0 < main_~length1~0); 2992#L564-4 main_~i~1 := 0; 2993#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 2998#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 2999#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3023#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3024#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3017#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3018#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3013#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3014#L568-3 assume !(main_~i~1 < main_~length2~0); 2989#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 2990#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 3032#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3008#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3009#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3031#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3006#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3007#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3005#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3003#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 2956#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 2957#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 2964#L542-4 goto; 3026#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 2996#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 2984#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 2985#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 2948#L525 assume !(0 == cstrncmp_~n); 2949#L527-4 [2021-10-28 09:16:50,309 INFO L793 eck$LassoCheckResult]: Loop: 2949#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 2969#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 2965#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 2952#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 2953#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 2949#L527-4 [2021-10-28 09:16:50,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1202872581, now seen corresponding path program 4 times [2021-10-28 09:16:50,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:50,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706047171] [2021-10-28 09:16:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:50,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:16:50,340 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:16:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:16:50,382 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:16:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 4 times [2021-10-28 09:16:50,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:50,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989758494] [2021-10-28 09:16:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:50,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:16:50,390 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:16:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:16:50,396 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:16:50,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:50,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1087325267, now seen corresponding path program 3 times [2021-10-28 09:16:50,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:50,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974504176] [2021-10-28 09:16:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:50,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:16:50,423 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:16:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:16:50,452 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:16:57,561 WARN L207 SmtUtils]: Spent 6.91 s on a formula simplification. DAG size of input: 335 DAG size of output: 262 [2021-10-28 09:16:58,632 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:16:58,632 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:16:58,632 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:16:58,632 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:16:58,632 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:16:58,632 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:16:58,633 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:16:58,633 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:16:58,633 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration15_Lasso [2021-10-28 09:16:58,633 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:16:58,633 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:16:58,639 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 09:16:58,641 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 09:16:58,642 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 09:16:58,645 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 09:16:58,647 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 09:16:58,649 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 09:16:58,651 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 09:16:59,960 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 09:16:59,969 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 09:16:59,971 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 09:16:59,983 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 09:16:59,985 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 09:16:59,987 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 09:16:59,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:16:59,990 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 09:16:59,992 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 09:16:59,994 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 09:16:59,996 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 09:16:59,999 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 09:17:00,001 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 09:17:00,003 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 09:17:00,005 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 09:17:00,007 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 09:17:00,009 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 09:17:00,011 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 09:17:00,012 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 09:17:00,014 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 09:17:00,016 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 09:17:00,017 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 09:17:00,024 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 09:17:00,027 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 09:17:00,029 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 09:17:00,031 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 09:17:00,033 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 09:17:00,039 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 09:17:00,042 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 09:17:00,044 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 09:17:00,046 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 09:17:00,048 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 09:17:00,050 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 09:17:00,053 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 09:17:00,055 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 09:17:00,057 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 09:17:01,176 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:17:01,177 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:17:01,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:01,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:01,186 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:01,188 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 09:17:01,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:01,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:01,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:01,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:01,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:01,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:01,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:01,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 09:17:01,211 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:01,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:01,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:01,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:01,240 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:01,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 09:17:01,241 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 09:17:01,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:01,248 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:01,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:01,248 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:01,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:01,249 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:01,249 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:01,250 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:01,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:01,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:01,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:01,271 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:01,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 09:17:01,272 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 09:17:01,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:01,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:01,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:01,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:01,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:01,280 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:01,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:01,281 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:01,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:01,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:01,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:01,301 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:01,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 09:17:01,303 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 09:17:01,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:01,310 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:01,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:01,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:01,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:01,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:01,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:01,311 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:01,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:01,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:01,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:01,333 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:01,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-28 09:17:01,335 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 09:17:01,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:01,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:01,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:01,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:01,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:01,342 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:01,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:01,366 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:01,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:01,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:01,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:01,407 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:01,411 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 09:17:01,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:01,420 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:01,420 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:01,420 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:01,422 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:17:01,422 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:17:01,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-28 09:17:01,434 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:01,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:01,470 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:01,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:01,471 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:01,474 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 09:17:01,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:01,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:01,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:01,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:01,484 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:17:01,484 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:17:01,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 09:17:01,498 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:01,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:01,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:01,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:01,539 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:01,541 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 09:17:01,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:01,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:01,553 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:17:01,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:01,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-28 09:17:01,603 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-28 09:17:01,604 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-28 09:17:01,725 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:17:02,153 INFO L443 ModelExtractionUtils]: Simplification made 54 calls to the SMT solver. [2021-10-28 09:17:02,153 INFO L444 ModelExtractionUtils]: 63 out of 136 variables were initially zero. Simplification set additionally 70 variables to zero. [2021-10-28 09:17:02,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:02,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:02,155 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:02,159 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:17:02,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 09:17:02,189 INFO L438 nArgumentSynthesizer]: Removed 4 redundant supporting invariants from a total of 4. [2021-10-28 09:17:02,189 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:17:02,189 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_cstrlen_~s~0.base)_3, ULTIMATE.start_cstrncmp_~s2.offset) = 1*v_rep(select #length ULTIMATE.start_cstrlen_~s~0.base)_3 - 1*ULTIMATE.start_cstrncmp_~s2.offset Supporting invariants [] [2021-10-28 09:17:02,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:02,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:02,483 INFO L297 tatePredicateManager]: 51 out of 53 supporting invariants were superfluous and have been removed [2021-10-28 09:17:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:02,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 09:17:02,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:02,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:17:02,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:03,004 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 09:17:03,005 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 2 loop predicates [2021-10-28 09:17:03,005 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 99 transitions. cyclomatic complexity: 19 Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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 09:17:03,145 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 99 transitions. cyclomatic complexity: 19. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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) Result 115 states and 130 transitions. Complement of second has 9 states. [2021-10-28 09:17:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 5 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:17:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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 09:17:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 35 transitions. [2021-10-28 09:17:03,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 40 letters. Loop has 5 letters. [2021-10-28 09:17:03,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:17:03,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 45 letters. Loop has 5 letters. [2021-10-28 09:17:03,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:17:03,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 40 letters. Loop has 10 letters. [2021-10-28 09:17:03,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:17:03,148 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 130 transitions. [2021-10-28 09:17:03,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:17:03,150 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 98 states and 112 transitions. [2021-10-28 09:17:03,150 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-10-28 09:17:03,150 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-10-28 09:17:03,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 112 transitions. [2021-10-28 09:17:03,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:17:03,151 INFO L681 BuchiCegarLoop]: Abstraction has 98 states and 112 transitions. [2021-10-28 09:17:03,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 112 transitions. [2021-10-28 09:17:03,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-10-28 09:17:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 89 states have internal predecessors, (103), 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 09:17:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-10-28 09:17:03,162 INFO L704 BuchiCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-10-28 09:17:03,163 INFO L587 BuchiCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-10-28 09:17:03,163 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-28 09:17:03,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 90 states and 103 transitions. [2021-10-28 09:17:03,163 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:17:03,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:17:03,164 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:17:03,165 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:03,165 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 09:17:03,165 INFO L791 eck$LassoCheckResult]: Stem: 3582#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3551#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 3552#L555 assume !(main_~length1~0 < 1); 3584#L555-2 assume !(main_~length2~0 < 1); 3545#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 3546#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3578#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3579#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3589#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3626#L564-3 assume !(main_~i~0 < main_~length1~0); 3583#L564-4 main_~i~1 := 0; 3566#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3567#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3568#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3569#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3618#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3616#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3614#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3612#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3611#L568-3 assume !(main_~i~1 < main_~length2~0); 3580#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 3581#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 3607#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3591#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3592#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3564#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3565#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3598#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3599#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3590#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3547#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 3548#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 3570#L542-4 goto; 3571#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 3605#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 3604#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 3603#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 3602#L525 assume !(0 == cstrncmp_~n); 3577#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 3560#L528 assume cstrncmp_#t~mem6 != cstrncmp_#t~mem7;havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;call cstrncmp_#t~mem9 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;call cstrncmp_#t~mem10 := read~int(cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, 1);cstrncmp_#res := cstrncmp_#t~mem9 % 256 - cstrncmp_#t~mem10 % 256;havoc cstrncmp_#t~mem9;havoc cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset;havoc cstrncmp_#t~mem10; 3561#L533 cstrstr_#t~ret16 := cstrncmp_#res; 3557#L542-2 assume !!(0 != cstrstr_#t~ret16);havoc cstrstr_#t~ret16; 3558#L542-4 goto; 3572#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 3593#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 3573#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 3574#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 3537#L525 assume !(0 == cstrncmp_~n); 3538#L527-4 [2021-10-28 09:17:03,165 INFO L793 eck$LassoCheckResult]: Loop: 3538#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 3559#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 3555#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 3541#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 3542#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 3538#L527-4 [2021-10-28 09:17:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:03,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1314272625, now seen corresponding path program 1 times [2021-10-28 09:17:03,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:03,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116402201] [2021-10-28 09:17:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:03,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-28 09:17:03,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:03,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116402201] [2021-10-28 09:17:03,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116402201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:03,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067245399] [2021-10-28 09:17:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:03,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:03,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:03,663 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:17:03,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-28 09:17:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:04,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-28 09:17:04,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:04,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-28 09:17:04,357 INFO L354 Elim1Store]: treesize reduction 40, result has 20.0 percent of original size [2021-10-28 09:17:04,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31 [2021-10-28 09:17:05,339 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-10-28 09:17:05,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 23 [2021-10-28 09:17:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-28 09:17:05,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067245399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:05,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:05,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-28 09:17:05,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026275557] [2021-10-28 09:17:05,382 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:17:05,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:05,382 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 5 times [2021-10-28 09:17:05,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:05,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440604297] [2021-10-28 09:17:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:05,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:05,390 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:17:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:05,394 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:17:05,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:05,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 09:17:05,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:17:05,721 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. cyclomatic complexity: 21 Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 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 09:17:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:06,390 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2021-10-28 09:17:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:17:06,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 110 transitions. [2021-10-28 09:17:06,391 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:17:06,392 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 62 states and 71 transitions. [2021-10-28 09:17:06,392 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-28 09:17:06,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 09:17:06,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2021-10-28 09:17:06,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:17:06,393 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-10-28 09:17:06,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2021-10-28 09:17:06,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-10-28 09:17:06,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 60 states have (on average 1.15) internal successors, (69), 59 states have internal predecessors, (69), 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 09:17:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2021-10-28 09:17:06,395 INFO L704 BuchiCegarLoop]: Abstraction has 60 states and 69 transitions. [2021-10-28 09:17:06,396 INFO L587 BuchiCegarLoop]: Abstraction has 60 states and 69 transitions. [2021-10-28 09:17:06,396 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-28 09:17:06,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 69 transitions. [2021-10-28 09:17:06,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:17:06,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:17:06,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:17:06,397 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:06,397 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 09:17:06,398 INFO L791 eck$LassoCheckResult]: Stem: 3952#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3924#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 3925#L555 assume !(main_~length1~0 < 1); 3954#L555-2 assume !(main_~length2~0 < 1); 3920#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 3921#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3957#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3969#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3948#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3949#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 3958#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 3962#L564-3 assume !(main_~i~0 < main_~length1~0); 3953#L564-4 main_~i~1 := 0; 3940#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3941#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3942#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3943#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3968#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3967#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3966#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 3965#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 3964#L568-3 assume !(main_~i~1 < main_~length2~0); 3950#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 3951#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 3934#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3935#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3956#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3936#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3937#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3961#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 3960#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 3959#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 3918#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 3919#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 3926#L542-4 goto; 3938#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 3922#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 3923#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 3947#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 3912#L525 assume !(0 == cstrncmp_~n); 3913#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 3932#L528 assume cstrncmp_#t~mem6 != cstrncmp_#t~mem7;havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;call cstrncmp_#t~mem9 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;call cstrncmp_#t~mem10 := read~int(cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, 1);cstrncmp_#res := cstrncmp_#t~mem9 % 256 - cstrncmp_#t~mem10 % 256;havoc cstrncmp_#t~mem9;havoc cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset;havoc cstrncmp_#t~mem10; 3933#L533 cstrstr_#t~ret16 := cstrncmp_#res; 3929#L542-2 assume !!(0 != cstrstr_#t~ret16);havoc cstrstr_#t~ret16; 3930#L542-4 goto; 3939#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 3963#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 3944#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 3945#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 3910#L525 assume !(0 == cstrncmp_~n); 3911#L527-4 [2021-10-28 09:17:06,398 INFO L793 eck$LassoCheckResult]: Loop: 3911#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 3931#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 3927#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 3914#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 3915#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 3911#L527-4 [2021-10-28 09:17:06,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:06,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1519050033, now seen corresponding path program 2 times [2021-10-28 09:17:06,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:06,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580533821] [2021-10-28 09:17:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:06,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:06,439 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:17:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:06,470 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:17:06,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:06,471 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 6 times [2021-10-28 09:17:06,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:06,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979225871] [2021-10-28 09:17:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:06,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:06,480 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:17:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:06,484 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:17:06,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:06,485 INFO L85 PathProgramCache]: Analyzing trace with hash -419005351, now seen corresponding path program 1 times [2021-10-28 09:17:06,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:06,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224646116] [2021-10-28 09:17:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:06,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-28 09:17:06,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:17:06,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224646116] [2021-10-28 09:17:06,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224646116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:06,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532895916] [2021-10-28 09:17:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:06,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:17:06,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:06,813 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:17:06,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-28 09:17:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:07,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-28 09:17:07,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:07,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-28 09:17:07,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-10-28 09:17:08,533 INFO L354 Elim1Store]: treesize reduction 35, result has 10.3 percent of original size [2021-10-28 09:17:08,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 25 [2021-10-28 09:17:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-28 09:17:08,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532895916] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:17:08,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:08,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 25 [2021-10-28 09:17:08,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102018255] [2021-10-28 09:17:08,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:17:08,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 09:17:08,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:17:08,737 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. cyclomatic complexity: 15 Second operand has 25 states, 25 states have (on average 3.24) internal successors, (81), 25 states have internal predecessors, (81), 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 09:17:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:10,310 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2021-10-28 09:17:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:17:10,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 172 transitions. [2021-10-28 09:17:10,312 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-10-28 09:17:10,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 145 states and 167 transitions. [2021-10-28 09:17:10,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-28 09:17:10,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-28 09:17:10,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 167 transitions. [2021-10-28 09:17:10,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:17:10,313 INFO L681 BuchiCegarLoop]: Abstraction has 145 states and 167 transitions. [2021-10-28 09:17:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 167 transitions. [2021-10-28 09:17:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 108. [2021-10-28 09:17:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 108 states have (on average 1.1481481481481481) internal successors, (124), 107 states have internal predecessors, (124), 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 09:17:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2021-10-28 09:17:10,317 INFO L704 BuchiCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-10-28 09:17:10,317 INFO L587 BuchiCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-10-28 09:17:10,317 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-28 09:17:10,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 108 states and 124 transitions. [2021-10-28 09:17:10,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:17:10,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:17:10,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:17:10,318 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:10,319 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 09:17:10,319 INFO L791 eck$LassoCheckResult]: Stem: 4387#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 4357#L-1 havoc main_#res;havoc main_#t~nondet20, main_#t~nondet21, main_#t~malloc22.base, main_#t~malloc22.offset, main_#t~malloc23.base, main_#t~malloc23.offset, main_#t~nondet25, main_#t~post24, main_~i~0, main_#t~nondet27, main_#t~post26, main_~i~1, main_#t~ret28.base, main_#t~ret28.offset, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet20;havoc main_#t~nondet20;main_~length2~0 := main_#t~nondet21;havoc main_#t~nondet21; 4358#L555 assume !(main_~length1~0 < 1); 4389#L555-2 assume !(main_~length2~0 < 1); 4351#L558-1 call main_#t~malloc22.base, main_#t~malloc22.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc22.base, main_#t~malloc22.offset;call main_#t~malloc23.base, main_#t~malloc23.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc23.base, main_#t~malloc23.offset;main_~i~0 := 0; 4352#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 4383#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 4384#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 4393#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 4409#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 4406#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 4404#L564-3 assume !!(main_~i~0 < main_~length1~0);call write~int(main_#t~nondet25, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet25; 4405#L564-2 main_#t~post24 := main_~i~0;main_~i~0 := 1 + main_#t~post24;havoc main_#t~post24; 4450#L564-3 assume !(main_~i~0 < main_~length1~0); 4449#L564-4 main_~i~1 := 0; 4448#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 4447#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 4446#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 4445#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 4444#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 4443#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 4442#L568-3 assume !!(main_~i~1 < main_~length2~0);call write~int(main_#t~nondet27, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet27; 4441#L568-2 main_#t~post26 := main_~i~1;main_~i~1 := 1 + main_#t~post26;havoc main_#t~post26; 4440#L568-3 assume !(main_~i~1 < main_~length2~0); 4439#L568-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrstr_#in~s.base, cstrstr_#in~s.offset, cstrstr_#in~find.base, cstrstr_#in~find.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrstr_#res.base, cstrstr_#res.offset;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset, cstrstr_#t~mem14, cstrstr_#t~ret15, cstrstr_#t~post17.base, cstrstr_#t~post17.offset, cstrstr_#t~mem18, cstrstr_#t~ret16, cstrstr_#t~post19.base, cstrstr_#t~post19.offset, cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~c~0, cstrstr_~sc~0, cstrstr_~len~0;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#in~s.base, cstrstr_#in~s.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#in~find.base, cstrstr_#in~find.offset;havoc cstrstr_~c~0;havoc cstrstr_~sc~0;havoc cstrstr_~len~0;cstrstr_#t~post13.base, cstrstr_#t~post13.offset := cstrstr_~find.base, cstrstr_~find.offset;cstrstr_~find.base, cstrstr_~find.offset := cstrstr_#t~post13.base, 1 + cstrstr_#t~post13.offset;call cstrstr_#t~mem14 := read~int(cstrstr_#t~post13.base, cstrstr_#t~post13.offset, 1);cstrstr_~c~0 := cstrstr_#t~mem14; 4438#L540 assume 0 != cstrstr_~c~0;havoc cstrstr_#t~post13.base, cstrstr_#t~post13.offset;havoc cstrstr_#t~mem14;cstrlen_#in~str.base, cstrlen_#in~str.offset := cstrstr_~find.base, cstrstr_~find.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 4437#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 4436#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 4435#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 4434#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 4396#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 4433#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 4395#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 4394#L518-1 assume !(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 4353#L518-5 assume cstrlen_~s~0.base == cstrlen_~str.base;cstrlen_#res := (if cstrlen_~s~0.offset - cstrlen_~str.offset < 0 && 0 != (cstrlen_~s~0.offset - cstrlen_~str.offset) % 1 then 1 + (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1 else (cstrlen_~s~0.offset - cstrlen_~str.offset) / 1); 4354#L520 cstrstr_#t~ret15 := cstrlen_#res;cstrstr_~len~0 := cstrstr_#t~ret15;havoc cstrstr_#t~ret15; 4359#L542-4 goto; 4390#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 4355#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 4356#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 4381#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 4345#L525 assume !(0 == cstrncmp_~n); 4346#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 4408#L528 assume cstrncmp_#t~mem6 != cstrncmp_#t~mem7;havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;call cstrncmp_#t~mem9 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset - 1;call cstrncmp_#t~mem10 := read~int(cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, 1);cstrncmp_#res := cstrncmp_#t~mem9 % 256 - cstrncmp_#t~mem10 % 256;havoc cstrncmp_#t~mem9;havoc cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset;havoc cstrncmp_#t~mem10; 4366#L533 cstrstr_#t~ret16 := cstrncmp_#res; 4362#L542-2 assume !!(0 != cstrstr_#t~ret16);havoc cstrstr_#t~ret16; 4363#L542-4 goto; 4377#L543-2 cstrstr_#t~post17.base, cstrstr_#t~post17.offset := cstrstr_~s.base, cstrstr_~s.offset;cstrstr_~s.base, cstrstr_~s.offset := cstrstr_#t~post17.base, 1 + cstrstr_#t~post17.offset;call cstrstr_#t~mem18 := read~int(cstrstr_#t~post17.base, cstrstr_#t~post17.offset, 1);cstrstr_~sc~0 := cstrstr_#t~mem18; 4407#L544 assume !(0 == cstrstr_~sc~0);havoc cstrstr_#t~post17.base, cstrstr_#t~post17.offset;havoc cstrstr_#t~mem18; 4378#L543 assume !(cstrstr_~sc~0 != cstrstr_~c~0); 4379#L542-1 cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := cstrstr_~s.base, cstrstr_~s.offset, cstrstr_~find.base, cstrstr_~find.offset, cstrstr_~len~0;havoc cstrncmp_#res;havoc cstrncmp_#t~mem6, cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, cstrncmp_#t~mem7, cstrncmp_#t~mem9, cstrncmp_#t~pre8.base, cstrncmp_#t~pre8.offset, cstrncmp_#t~mem10, cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, cstrncmp_#t~mem12, cstrncmp_#t~pre4, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n; 4343#L525 assume !(0 == cstrncmp_~n); 4344#L527-4 [2021-10-28 09:17:10,319 INFO L793 eck$LassoCheckResult]: Loop: 4344#L527-4 call cstrncmp_#t~mem6 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post5.base, 1 + cstrncmp_#t~post5.offset;call cstrncmp_#t~mem7 := read~int(cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset, 1); 4364#L528 assume !(cstrncmp_#t~mem6 != cstrncmp_#t~mem7);havoc cstrncmp_#t~mem6;havoc cstrncmp_#t~post5.base, cstrncmp_#t~post5.offset;havoc cstrncmp_#t~mem7;cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post11.base, 1 + cstrncmp_#t~post11.offset;call cstrncmp_#t~mem12 := read~int(cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset, 1); 4360#L530 assume !(0 == cstrncmp_#t~mem12);havoc cstrncmp_#t~post11.base, cstrncmp_#t~post11.offset;havoc cstrncmp_#t~mem12; 4347#L527-1 cstrncmp_#t~pre4 := cstrncmp_~n - 1;cstrncmp_~n := cstrncmp_~n - 1; 4348#L527-2 assume !!(0 != cstrncmp_#t~pre4);havoc cstrncmp_#t~pre4; 4344#L527-4 [2021-10-28 09:17:10,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:10,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1332858707, now seen corresponding path program 3 times [2021-10-28 09:17:10,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:10,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944701437] [2021-10-28 09:17:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:10,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:10,357 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:17:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:10,391 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:17:10,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash 118492775, now seen corresponding path program 7 times [2021-10-28 09:17:10,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:10,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700745642] [2021-10-28 09:17:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:10,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:10,399 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:17:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:10,402 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:17:10,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:10,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1922995909, now seen corresponding path program 2 times [2021-10-28 09:17:10,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:17:10,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300907845] [2021-10-28 09:17:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:10,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:17:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:10,434 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:17:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:17:10,490 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:17:29,396 WARN L207 SmtUtils]: Spent 18.70 s on a formula simplification. DAG size of input: 446 DAG size of output: 341 [2021-10-28 09:17:31,467 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:17:31,467 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:17:31,467 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:17:31,467 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:17:31,467 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:17:31,468 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:31,468 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:17:31,468 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:17:31,468 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrstr-alloca-2.i_Iteration18_Lasso [2021-10-28 09:17:31,468 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:17:31,468 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:17:31,474 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 09:17:31,484 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 09:17:31,486 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 09:17:31,488 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 09:17:31,490 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 09:17:31,492 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 09:17:31,495 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 09:17:31,497 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 09:17:31,499 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 09:17:31,502 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 09:17:31,504 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 09:17:31,506 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 09:17:31,508 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 09:17:31,510 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 09:17:31,512 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 09:17:31,514 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 09:17:31,517 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 09:17:31,519 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 09:17:31,521 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 09:17:31,523 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 09:17:31,525 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 09:17:33,856 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 09:17:33,872 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 09:17:33,874 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 09:17:33,876 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 09:17:33,879 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 09:17:33,881 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 09:17:33,884 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 09:17:33,885 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 09:17:33,887 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 09:17:33,890 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 09:17:33,892 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 09:17:33,894 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 09:17:33,897 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 09:17:33,899 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 09:17:33,901 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 09:17:33,903 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 09:17:33,905 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 09:17:33,907 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 09:17:33,909 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 09:17:33,911 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 09:17:33,913 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 09:17:33,915 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 09:17:35,606 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:17:35,607 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:17:35,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:35,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:35,611 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:35,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-28 09:17:35,612 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 09:17:35,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:35,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:35,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:35,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:35,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:35,620 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:35,620 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:35,621 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:35,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:35,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:35,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:35,642 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:35,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 09:17:35,643 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 09:17:35,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:35,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:35,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:35,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:35,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:35,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:35,651 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:35,652 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:35,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:35,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:35,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:35,673 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:35,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-28 09:17:35,674 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 09:17:35,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:35,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:35,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:35,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:35,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:35,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:35,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:35,683 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:35,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:35,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:35,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:35,705 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:35,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-28 09:17:35,707 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 09:17:35,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:35,716 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:35,716 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:35,716 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:35,716 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:35,717 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:35,717 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:35,736 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:35,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:35,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:35,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:35,760 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:35,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-28 09:17:35,762 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 09:17:35,770 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:35,770 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:35,770 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:35,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:35,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:35,771 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:35,771 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:35,772 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:35,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:35,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:35,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:35,796 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:35,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-28 09:17:35,799 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 09:17:35,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:35,808 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:35,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:35,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:35,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:35,809 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:35,809 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:35,810 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:35,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:35,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:35,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:35,835 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:35,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-28 09:17:35,843 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 09:17:35,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:35,852 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:35,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:35,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:35,852 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:35,853 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:35,853 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:35,854 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:35,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:35,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:35,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:35,882 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:35,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-10-28 09:17:35,883 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:17:35,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:35,894 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:35,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:35,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:35,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:35,895 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:35,895 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:35,914 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:35,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:35,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:35,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:35,952 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:35,959 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 09:17:35,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:35,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:35,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:35,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:35,969 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:17:35,969 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:17:35,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-10-28 09:17:35,990 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,031 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,033 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 09:17:36,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,045 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:36,045 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,045 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,045 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,046 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:36,046 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:36,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-10-28 09:17:36,062 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,099 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,101 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 09:17:36,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,110 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:36,111 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,111 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,111 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,111 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:36,111 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:36,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-28 09:17:36,122 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,164 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,166 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 09:17:36,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:36,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:36,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:36,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-28 09:17:36,186 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,224 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,226 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 09:17:36,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:36,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:36,236 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:36,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-28 09:17:36,250 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,295 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,297 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 09:17:36,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,308 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:36,308 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,308 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,308 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:36,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:36,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-28 09:17:36,322 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,363 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,364 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,368 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 09:17:36,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,377 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:36,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,377 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:36,377 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:36,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-28 09:17:36,390 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,427 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,429 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 09:17:36,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,438 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:36,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,439 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:36,439 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:36,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-10-28 09:17:36,450 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,487 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,488 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,489 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 09:17:36,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,500 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:17:36,500 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:17:36,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-10-28 09:17:36,522 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,563 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,565 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 09:17:36,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,574 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:36,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:36,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:36,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-10-28 09:17:36,586 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,619 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2021-10-28 09:17:36,621 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 09:17:36,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,628 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:36,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:36,628 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:36,629 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,649 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-28 09:17:36,650 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 09:17:36,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,657 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:17:36,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,658 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:17:36,658 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:17:36,659 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,678 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-28 09:17:36,679 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 09:17:36,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,687 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2021-10-28 09:17:36,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,688 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-10-28 09:17:36,688 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:17:36,690 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:36,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,711 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-28 09:17:36,712 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 09:17:36,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:17:36,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,720 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:17:36,720 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:17:36,722 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:17:36,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2021-10-28 09:17:36,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:36,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:36,742 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:36,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-28 09:17:36,743 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 09:17:36,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:17:36,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:17:36,752 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:17:36,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:17:36,795 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-28 09:17:36,796 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-28 09:17:36,955 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:17:37,192 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2021-10-28 09:17:37,192 INFO L444 ModelExtractionUtils]: 71 out of 151 variables were initially zero. Simplification set additionally 77 variables to zero. [2021-10-28 09:17:37,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:17:37,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:17:37,195 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:17:37,203 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:17:37,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-28 09:17:37,228 INFO L438 nArgumentSynthesizer]: Removed 4 redundant supporting invariants from a total of 4. [2021-10-28 09:17:37,229 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:17:37,229 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc23.base)_6, ULTIMATE.start_cstrncmp_~s2.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc23.base)_6 - 1*ULTIMATE.start_cstrncmp_~s2.offset Supporting invariants [] [2021-10-28 09:17:37,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:37,728 INFO L297 tatePredicateManager]: 71 out of 72 supporting invariants were superfluous and have been removed [2021-10-28 09:17:37,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:37,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:17:37,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:37,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:38,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:17:38,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:38,271 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 09:17:38,272 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2021-10-28 09:17:38,272 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25 Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 09:17:38,361 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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) Result 129 states and 146 transitions. Complement of second has 8 states. [2021-10-28 09:17:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 4 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:17:38,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 09:17:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 35 transitions. [2021-10-28 09:17:38,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 35 transitions. Stem has 52 letters. Loop has 5 letters. [2021-10-28 09:17:38,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:17:38,363 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:17:38,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:38,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:17:38,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:38,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:17:38,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:38,855 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 09:17:38,855 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 2 loop predicates [2021-10-28 09:17:38,856 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25 Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 09:17:38,947 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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) Result 153 states and 175 transitions. Complement of second has 10 states. [2021-10-28 09:17:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 4 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:17:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 09:17:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 42 transitions. [2021-10-28 09:17:38,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 42 transitions. Stem has 52 letters. Loop has 5 letters. [2021-10-28 09:17:38,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:17:38,950 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:17:38,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:39,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:17:39,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:39,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:17:39,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:39,409 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 09:17:39,409 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2021-10-28 09:17:39,410 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25 Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 09:17:39,474 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 108 states and 124 transitions. cyclomatic complexity: 25. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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) Result 125 states and 141 transitions. Complement of second has 7 states. [2021-10-28 09:17:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 4 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:17:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 09:17:39,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 50 transitions. [2021-10-28 09:17:39,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 50 transitions. Stem has 52 letters. Loop has 5 letters. [2021-10-28 09:17:39,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:17:39,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 50 transitions. Stem has 57 letters. Loop has 5 letters. [2021-10-28 09:17:39,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:17:39,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 50 transitions. Stem has 52 letters. Loop has 10 letters. [2021-10-28 09:17:39,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:17:39,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 141 transitions. [2021-10-28 09:17:39,478 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:17:39,478 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 0 states and 0 transitions. [2021-10-28 09:17:39,478 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 09:17:39,478 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 09:17:39,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 09:17:39,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:17:39,479 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:17:39,479 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:17:39,479 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:17:39,479 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-28 09:17:39,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:17:39,479 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:17:39,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 09:17:39,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:17:39 BoogieIcfgContainer [2021-10-28 09:17:39,485 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:17:39,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:17:39,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:17:39,486 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:17:39,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:12:44" (3/4) ... [2021-10-28 09:17:39,489 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:17:39,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:17:39,490 INFO L168 Benchmark]: Toolchain (without parser) took 296539.25 ms. Allocated memory was 98.6 MB in the beginning and 243.3 MB in the end (delta: 144.7 MB). Free memory was 64.9 MB in the beginning and 46.6 MB in the end (delta: 18.4 MB). Peak memory consumption was 164.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:39,490 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:17:39,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.77 ms. Allocated memory was 98.6 MB in the beginning and 136.3 MB in the end (delta: 37.7 MB). Free memory was 64.6 MB in the beginning and 105.5 MB in the end (delta: -40.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:39,491 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.01 ms. Allocated memory is still 136.3 MB. Free memory was 105.5 MB in the beginning and 103.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:39,491 INFO L168 Benchmark]: Boogie Preprocessor took 56.77 ms. Allocated memory is still 136.3 MB. Free memory was 103.5 MB in the beginning and 102.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:39,491 INFO L168 Benchmark]: RCFGBuilder took 528.62 ms. Allocated memory is still 136.3 MB. Free memory was 102.2 MB in the beginning and 88.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:39,492 INFO L168 Benchmark]: BuchiAutomizer took 295345.57 ms. Allocated memory was 136.3 MB in the beginning and 243.3 MB in the end (delta: 107.0 MB). Free memory was 87.5 MB in the beginning and 46.6 MB in the end (delta: 40.9 MB). Peak memory consumption was 149.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:39,492 INFO L168 Benchmark]: Witness Printer took 3.59 ms. Allocated memory is still 243.3 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:17:39,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 545.77 ms. Allocated memory was 98.6 MB in the beginning and 136.3 MB in the end (delta: 37.7 MB). Free memory was 64.6 MB in the beginning and 105.5 MB in the end (delta: -40.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.01 ms. Allocated memory is still 136.3 MB. Free memory was 105.5 MB in the beginning and 103.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.77 ms. Allocated memory is still 136.3 MB. Free memory was 103.5 MB in the beginning and 102.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 528.62 ms. Allocated memory is still 136.3 MB. Free memory was 102.2 MB in the beginning and 88.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 295345.57 ms. Allocated memory was 136.3 MB in the beginning and 243.3 MB in the end (delta: 107.0 MB). Free memory was 87.5 MB in the beginning and 46.6 MB in the end (delta: 40.9 MB). Peak memory consumption was 149.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.59 ms. Allocated memory is still 243.3 MB. Free memory is still 46.6 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 18 terminating modules (12 trivial, 5 deterministic, 1 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[nondetString1] + -1 * i and consists of 5 locations. One deterministic module has affine ranking function length2 + -1 * i and consists of 4 locations. One deterministic module has affine ranking function unknown-#length-unknown[nondetString2] + -1 * s and consists of 4 locations. One deterministic module has affine ranking function unknown-#length-unknown[s] + -1 * s and consists of 3 locations. One deterministic module has affine ranking function unknown-#length-unknown[s] + -1 * s2 and consists of 7 locations. One nondeterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length2 * sizeof(char))] + -1 * s2 and consists of 6 locations. 12 modules have a trivial ranking function, the largest among these consists of 31 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 295.3s and 19 iterations. TraceHistogramMax:4. Analysis of lassos took 99.8s. Construction of modules took 3.0s. Büchi inclusion checks took 192.1s. Highest rank in rank-based complementation 3. Minimization of det autom 7. Minimization of nondet autom 11. Automata minimization 0.0s AutomataMinimizationTime, 17 MinimizatonAttempts, 155 StatesRemovedByMinimization, 13 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 108 states and ocurred in iteration 17. Nontrivial modules had stage [5, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 648 SDtfs, 1617 SDslu, 3348 SDs, 0 SdLazy, 2179 SolverSat, 220 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 3.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc6 concLT0 SILN0 SILU5 SILI0 SILT0 lasso6 LassoPreprocessingBenchmarks: Lassos: inital404 mio100 ax106 hnf99 lsp90 ukn60 mio100 lsp52 div100 bol100 ite100 ukn100 eq192 hnf89 smp93 dnf134 smp91 tf100 neg99 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 653ms VariablesStem: 26 VariablesLoop: 19 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 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 09:17:39,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:39,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-28 09:17:39,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-28 09:17:40,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-28 09:17:40,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-28 09:17:40,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-28 09:17:40,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-28 09:17:40,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-28 09:17:41,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:41,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5d0bbea-3724-40b7-a9c8-6a44b242b93d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...