./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX --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 679f2fe8d678884423b2dff47bf2c3c7ede0374b3a8bb68f9a9e8a332d8776ef --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:40:33,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:40:33,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:40:33,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:40:33,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:40:33,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:40:33,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:40:33,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:40:33,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:40:33,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:40:33,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:40:33,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:40:33,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:40:33,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:40:33,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:40:33,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:40:33,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:40:33,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:40:33,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:40:33,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:40:33,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:40:33,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:40:33,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:40:33,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:40:33,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:40:33,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:40:33,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:40:33,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:40:33,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:40:33,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:40:33,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:40:33,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:40:33,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:40:33,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:40:33,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:40:33,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:40:33,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:40:33,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:40:33,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:40:33,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:40:33,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:40:33,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-09 10:40:34,024 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:40:34,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:40:34,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:40:34,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:40:34,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:40:34,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:40:34,027 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:40:34,028 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-09 10:40:34,028 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-09 10:40:34,028 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-09 10:40:34,029 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-09 10:40:34,029 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-09 10:40:34,029 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-09 10:40:34,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:40:34,030 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:40:34,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:40:34,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:40:34,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:40:34,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:40:34,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-09 10:40:34,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-09 10:40:34,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-09 10:40:34,031 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:40:34,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:40:34,032 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-09 10:40:34,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:40:34,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-09 10:40:34,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:40:34,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:40:34,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:40:34,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:40:34,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:40:34,036 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-09 10:40:34,036 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_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 679f2fe8d678884423b2dff47bf2c3c7ede0374b3a8bb68f9a9e8a332d8776ef [2021-11-09 10:40:34,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:40:34,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:40:34,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:40:34,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:40:34,443 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:40:34,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/bitvector/gcd_4.c [2021-11-09 10:40:34,513 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/data/e78964844/78292094f3ce4dfbb0f333d91c9f6af2/FLAG6cbccac68 [2021-11-09 10:40:35,057 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:40:35,059 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/sv-benchmarks/c/bitvector/gcd_4.c [2021-11-09 10:40:35,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/data/e78964844/78292094f3ce4dfbb0f333d91c9f6af2/FLAG6cbccac68 [2021-11-09 10:40:35,413 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/data/e78964844/78292094f3ce4dfbb0f333d91c9f6af2 [2021-11-09 10:40:35,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:40:35,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:40:35,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:40:35,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:40:35,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:40:35,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302b3834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35, skipping insertion in model container [2021-11-09 10:40:35,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:40:35,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:40:35,612 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/sv-benchmarks/c/bitvector/gcd_4.c[662,675] [2021-11-09 10:40:35,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:40:35,643 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:40:35,656 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/sv-benchmarks/c/bitvector/gcd_4.c[662,675] [2021-11-09 10:40:35,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:40:35,675 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:40:35,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35 WrapperNode [2021-11-09 10:40:35,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:40:35,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:40:35,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:40:35,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:40:35,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:40:35,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:40:35,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:40:35,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:40:35,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:40:35,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:40:35,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:40:35,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:40:35,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35" (1/1) ... [2021-11-09 10:40:35,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:35,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:35,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:35,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-09 10:40:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:40:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:40:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:40:35,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:40:36,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:40:36,174 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-09 10:40:36,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:40:36 BoogieIcfgContainer [2021-11-09 10:40:36,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:40:36,178 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-09 10:40:36,190 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-09 10:40:36,194 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-09 10:40:36,195 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 10:40:36,195 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 10:40:35" (1/3) ... [2021-11-09 10:40:36,197 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c2510ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 10:40:36, skipping insertion in model container [2021-11-09 10:40:36,197 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 10:40:36,197 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:35" (2/3) ... [2021-11-09 10:40:36,198 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c2510ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 10:40:36, skipping insertion in model container [2021-11-09 10:40:36,198 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 10:40:36,198 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:40:36" (3/3) ... [2021-11-09 10:40:36,200 INFO L389 chiAutomizerObserver]: Analyzing ICFG gcd_4.c [2021-11-09 10:40:36,280 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-09 10:40:36,280 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-09 10:40:36,280 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-09 10:40:36,280 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-09 10:40:36,280 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-09 10:40:36,280 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-09 10:40:36,281 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-09 10:40:36,281 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-09 10:40:36,323 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:36,366 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:36,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 10:40:36,374 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 10:40:36,379 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-09 10:40:36,379 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-09 10:40:36,380 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-09 10:40:36,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:36,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:36,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 10:40:36,383 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 10:40:36,383 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-09 10:40:36,383 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-09 10:40:36,391 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 19#L22true assume !(gcd_test_~a < 0); 13#L22-2true assume !(gcd_test_~b < 0); 14#L23-1true assume !(0 == gcd_test_~a); 5#L30-2true [2021-11-09 10:40:36,391 INFO L793 eck$LassoCheckResult]: Loop: 5#L30-2true assume !!(0 != gcd_test_~b); 8#L30true assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 5#L30-2true [2021-11-09 10:40:36,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:36,398 INFO L85 PathProgramCache]: Analyzing trace with hash 28695882, now seen corresponding path program 1 times [2021-11-09 10:40:36,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:36,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797951414] [2021-11-09 10:40:36,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:36,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:36,552 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:36,615 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:36,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 1 times [2021-11-09 10:40:36,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:36,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193477696] [2021-11-09 10:40:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:36,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:36,639 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:36,656 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:36,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:36,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1806939727, now seen corresponding path program 1 times [2021-11-09 10:40:36,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:36,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357305365] [2021-11-09 10:40:36,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:36,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:36,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:36,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357305365] [2021-11-09 10:40:36,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357305365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:36,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:36,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:40:36,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952829642] [2021-11-09 10:40:36,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:36,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:40:36,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:40:36,852 INFO L87 Difference]: Start difference. First operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) 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) [2021-11-09 10:40:36,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:36,912 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-11-09 10:40:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:40:36,915 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 41 transitions. [2021-11-09 10:40:36,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:36,928 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 10 states and 12 transitions. [2021-11-09 10:40:36,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-11-09 10:40:36,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-11-09 10:40:36,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2021-11-09 10:40:36,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:40:36,931 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-09 10:40:36,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2021-11-09 10:40:36,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-09 10:40:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-09 10:40:36,961 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-09 10:40:36,962 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-09 10:40:36,962 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-09 10:40:36,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2021-11-09 10:40:36,965 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:36,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 10:40:36,965 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 10:40:36,966 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-09 10:40:36,966 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-09 10:40:36,967 INFO L791 eck$LassoCheckResult]: Stem: 74#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 75#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 70#L22 assume !(gcd_test_~a < 0); 71#L22-2 assume gcd_test_~b < 0;gcd_test_~b := -gcd_test_~b; 77#L23-1 assume !(0 == gcd_test_~a); 72#L30-2 [2021-11-09 10:40:36,967 INFO L793 eck$LassoCheckResult]: Loop: 72#L30-2 assume !!(0 != gcd_test_~b); 73#L30 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 72#L30-2 [2021-11-09 10:40:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash 28695820, now seen corresponding path program 1 times [2021-11-09 10:40:36,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:36,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583483845] [2021-11-09 10:40:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:36,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:37,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:37,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583483845] [2021-11-09 10:40:37,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583483845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:37,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:37,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:40:37,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310980686] [2021-11-09 10:40:37,036 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-09 10:40:37,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 2 times [2021-11-09 10:40:37,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:37,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584389868] [2021-11-09 10:40:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:37,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:37,045 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:37,054 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:37,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:37,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:40:37,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:40:37,088 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-09 10:40:37,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:37,099 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-11-09 10:40:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:40:37,100 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2021-11-09 10:40:37,102 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-11-09 10:40:37,102 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2021-11-09 10:40:37,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-11-09 10:40:37,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-09 10:40:37,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2021-11-09 10:40:37,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:40:37,103 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-09 10:40:37,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2021-11-09 10:40:37,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2021-11-09 10:40:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-09 10:40:37,106 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-09 10:40:37,106 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-09 10:40:37,106 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-09 10:40:37,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2021-11-09 10:40:37,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:37,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 10:40:37,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 10:40:37,108 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:37,109 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-09 10:40:37,109 INFO L791 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 103#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 97#L22 assume !(gcd_test_~a < 0); 98#L22-2 assume !(gcd_test_~b < 0); 104#L23-1 assume !(0 == gcd_test_~a); 105#L30-2 assume !!(0 != gcd_test_~b); 101#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 99#L30-2 [2021-11-09 10:40:37,109 INFO L793 eck$LassoCheckResult]: Loop: 99#L30-2 assume !!(0 != gcd_test_~b); 100#L30 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 99#L30-2 [2021-11-09 10:40:37,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:37,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1806939725, now seen corresponding path program 1 times [2021-11-09 10:40:37,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:37,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536663357] [2021-11-09 10:40:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:37,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:37,138 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:37,175 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 3 times [2021-11-09 10:40:37,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:37,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086630800] [2021-11-09 10:40:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:37,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:37,190 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:37,197 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:37,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1302289042, now seen corresponding path program 1 times [2021-11-09 10:40:37,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:37,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433756537] [2021-11-09 10:40:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:37,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:37,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:37,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433756537] [2021-11-09 10:40:37,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433756537] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:37,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526674314] [2021-11-09 10:40:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:37,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:37,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:37,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:37,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 10:40:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:37,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 10:40:37,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:37,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526674314] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:37,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:40:37,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-11-09 10:40:37,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923822042] [2021-11-09 10:40:37,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:40:37,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:40:37,581 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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) [2021-11-09 10:40:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:37,617 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-11-09 10:40:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:40:37,618 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2021-11-09 10:40:37,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:37,621 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2021-11-09 10:40:37,622 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-11-09 10:40:37,623 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-09 10:40:37,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2021-11-09 10:40:37,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:40:37,624 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-09 10:40:37,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2021-11-09 10:40:37,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-09 10:40:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 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) [2021-11-09 10:40:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-09 10:40:37,627 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-09 10:40:37,627 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-09 10:40:37,627 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-09 10:40:37,627 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2021-11-09 10:40:37,628 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:37,629 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 10:40:37,629 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 10:40:37,629 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-11-09 10:40:37,629 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-09 10:40:37,630 INFO L791 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 160#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 154#L22 assume !(gcd_test_~a < 0); 155#L22-2 assume !(gcd_test_~b < 0); 161#L23-1 assume !(0 == gcd_test_~a); 162#L30-2 assume !!(0 != gcd_test_~b); 158#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 156#L30-2 assume !!(0 != gcd_test_~b); 157#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 164#L30-2 [2021-11-09 10:40:37,630 INFO L793 eck$LassoCheckResult]: Loop: 164#L30-2 assume !!(0 != gcd_test_~b); 163#L30 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 164#L30-2 [2021-11-09 10:40:37,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:37,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1302289040, now seen corresponding path program 2 times [2021-11-09 10:40:37,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:37,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255721341] [2021-11-09 10:40:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:37,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:37,658 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:37,670 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:37,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:37,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 4 times [2021-11-09 10:40:37,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:37,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091837050] [2021-11-09 10:40:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:37,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:37,676 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:37,679 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:37,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1664285205, now seen corresponding path program 2 times [2021-11-09 10:40:37,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:37,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354462881] [2021-11-09 10:40:37,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:37,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:37,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:37,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354462881] [2021-11-09 10:40:37,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354462881] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:37,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985292128] [2021-11-09 10:40:37,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:40:37,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:37,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:37,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:37,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 10:40:37,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:40:37,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:37,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:40:37,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:37,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985292128] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:37,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:40:37,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-11-09 10:40:37,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361471346] [2021-11-09 10:40:37,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:40:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:40:37,990 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:38,051 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-11-09 10:40:38,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:40:38,051 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2021-11-09 10:40:38,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:38,052 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2021-11-09 10:40:38,053 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-11-09 10:40:38,053 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-11-09 10:40:38,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2021-11-09 10:40:38,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:40:38,053 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-09 10:40:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2021-11-09 10:40:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-09 10:40:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-09 10:40:38,055 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-09 10:40:38,055 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-09 10:40:38,055 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-09 10:40:38,055 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2021-11-09 10:40:38,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:38,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 10:40:38,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 10:40:38,057 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2021-11-09 10:40:38,057 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-09 10:40:38,057 INFO L791 eck$LassoCheckResult]: Stem: 230#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 231#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 225#L22 assume !(gcd_test_~a < 0); 226#L22-2 assume !(gcd_test_~b < 0); 232#L23-1 assume !(0 == gcd_test_~a); 233#L30-2 assume !!(0 != gcd_test_~b); 229#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 227#L30-2 assume !!(0 != gcd_test_~b); 228#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 237#L30-2 assume !!(0 != gcd_test_~b); 236#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 235#L30-2 [2021-11-09 10:40:38,057 INFO L793 eck$LassoCheckResult]: Loop: 235#L30-2 assume !!(0 != gcd_test_~b); 234#L30 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 235#L30-2 [2021-11-09 10:40:38,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1664285203, now seen corresponding path program 3 times [2021-11-09 10:40:38,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:38,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4282220] [2021-11-09 10:40:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:38,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:38,068 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:38,079 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:38,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:38,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 5 times [2021-11-09 10:40:38,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:38,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214931175] [2021-11-09 10:40:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:38,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:38,084 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:38,097 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:38,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:38,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1650246872, now seen corresponding path program 3 times [2021-11-09 10:40:38,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:38,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445743847] [2021-11-09 10:40:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:38,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:38,108 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:38,119 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:38,571 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 10:40:38,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 10:40:38,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 10:40:38,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 10:40:38,572 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 10:40:38,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:38,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 10:40:38,573 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 10:40:38,573 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd_4.c_Iteration5_Lasso [2021-11-09 10:40:38,573 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 10:40:38,573 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 10:40:38,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 10:40:38,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 10:40:38,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 10:40:38,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 10:40:38,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 10:40:38,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 10:40:38,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 10:40:38,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 10:40:38,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 10:40:38,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 10:40:38,958 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 10:40:38,962 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 10:40:38,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:38,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:38,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:38,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-09 10:40:38,996 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 [2021-11-09 10:40:39,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,015 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,015 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,028 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,072 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,082 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 [2021-11-09 10:40:39,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,093 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 10:40:39,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 10:40:39,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 10:40:39,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-09 10:40:39,110 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,155 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,163 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 [2021-11-09 10:40:39,172 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,175 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,175 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-09 10:40:39,188 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-09 10:40:39,234 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 [2021-11-09 10:40:39,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,252 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,252 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,270 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-09 10:40:39,320 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 [2021-11-09 10:40:39,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,334 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,334 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,358 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,401 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 [2021-11-09 10:40:39,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,411 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,413 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,422 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-09 10:40:39,444 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,495 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 [2021-11-09 10:40:39,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,507 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,508 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-09 10:40:39,511 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,550 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,560 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 10:40:39,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,571 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,571 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-09 10:40:39,590 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,628 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,637 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 [2021-11-09 10:40:39,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,649 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,649 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-09 10:40:39,658 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,692 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,698 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 [2021-11-09 10:40:39,707 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,707 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,707 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,707 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,709 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,709 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-09 10:40:39,726 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,750 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,775 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 [2021-11-09 10:40:39,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-09 10:40:39,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,786 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,786 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,798 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,824 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-09 10:40:39,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-09 10:40:39,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,835 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,835 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,839 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,860 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-09 10:40:39,861 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 [2021-11-09 10:40:39,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,873 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,873 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,886 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,915 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-09 10:40:39,919 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 [2021-11-09 10:40:39,927 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 10:40:39,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,928 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 10:40:39,929 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 10:40:39,932 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 10:40:39,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:39,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:39,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:39,953 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:39,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-09 10:40:39,956 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 [2021-11-09 10:40:39,964 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 10:40:39,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 10:40:39,964 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-09 10:40:39,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 10:40:39,979 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-11-09 10:40:39,979 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-11-09 10:40:40,011 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 10:40:40,062 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2021-11-09 10:40:40,063 INFO L444 ModelExtractionUtils]: 21 out of 36 variables were initially zero. Simplification set additionally 9 variables to zero. [2021-11-09 10:40:40,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 10:40:40,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:40,070 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 10:40:40,079 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 10:40:40,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-09 10:40:40,122 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-11-09 10:40:40,123 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 10:40:40,123 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_gcd_test_~b) = 1*ULTIMATE.start_gcd_test_~b Supporting invariants [1*ULTIMATE.start_gcd_test_~a - 2 >= 0] [2021-11-09 10:40:40,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:40,175 INFO L297 tatePredicateManager]: 7 out of 8 supporting invariants were superfluous and have been removed [2021-11-09 10:40:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:40,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:40:40,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:40,393 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:40:40,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:40,408 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 1 loop predicates [2021-11-09 10:40:40,408 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:40,482 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 15 transitions. Complement of second has 6 states. [2021-11-09 10:40:40,483 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 [2021-11-09 10:40:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-11-09 10:40:40,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 11 letters. Loop has 2 letters. [2021-11-09 10:40:40,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 10:40:40,486 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 10:40:40,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:40,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:40:40,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:40,684 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:40:40,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:40,697 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 1 loop predicates [2021-11-09 10:40:40,697 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:40,757 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 15 transitions. Complement of second has 6 states. [2021-11-09 10:40:40,757 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 [2021-11-09 10:40:40,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-11-09 10:40:40,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 11 letters. Loop has 2 letters. [2021-11-09 10:40:40,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 10:40:40,759 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 10:40:40,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:40,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:40:40,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:40,981 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:40:40,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:40,999 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 1 loop predicates [2021-11-09 10:40:40,999 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:41,111 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 25 transitions. Complement of second has 12 states. [2021-11-09 10:40:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 4 stem states 1 non-accepting loop states 2 accepting loop states [2021-11-09 10:40:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:41,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2021-11-09 10:40:41,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 11 letters. Loop has 2 letters. [2021-11-09 10:40:41,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 10:40:41,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 13 letters. Loop has 2 letters. [2021-11-09 10:40:41,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 10:40:41,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 11 letters. Loop has 4 letters. [2021-11-09 10:40:41,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 10:40:41,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 25 transitions. [2021-11-09 10:40:41,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-09 10:40:41,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 19 states and 23 transitions. [2021-11-09 10:40:41,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-11-09 10:40:41,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-11-09 10:40:41,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2021-11-09 10:40:41,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 10:40:41,116 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-09 10:40:41,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2021-11-09 10:40:41,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-11-09 10:40:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-09 10:40:41,118 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-09 10:40:41,118 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-09 10:40:41,118 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-09 10:40:41,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2021-11-09 10:40:41,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:41,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 10:40:41,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 10:40:41,119 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1, 1] [2021-11-09 10:40:41,119 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-09 10:40:41,120 INFO L791 eck$LassoCheckResult]: Stem: 513#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 514#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 511#L22 assume !(gcd_test_~a < 0); 512#L22-2 assume !(gcd_test_~b < 0); 515#L23-1 assume !(0 == gcd_test_~a); 516#L30-2 assume !!(0 != gcd_test_~b); 522#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 521#L30-2 assume !!(0 != gcd_test_~b); 520#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 519#L30-2 assume !!(0 != gcd_test_~b); 518#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 517#L30-2 assume !!(0 != gcd_test_~b); 510#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 506#L30-2 [2021-11-09 10:40:41,120 INFO L793 eck$LassoCheckResult]: Loop: 506#L30-2 assume !!(0 != gcd_test_~b); 507#L30 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 506#L30-2 [2021-11-09 10:40:41,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1650246870, now seen corresponding path program 4 times [2021-11-09 10:40:41,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:41,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501058678] [2021-11-09 10:40:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:41,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:41,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:41,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:41,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501058678] [2021-11-09 10:40:41,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501058678] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:41,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173181827] [2021-11-09 10:40:41,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:40:41,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:41,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:41,230 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:41,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-09 10:40:41,321 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:40:41,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:41,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 10:40:41,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:41,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173181827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:41,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:41,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-11-09 10:40:41,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255408860] [2021-11-09 10:40:41,481 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-09 10:40:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:41,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 6 times [2021-11-09 10:40:41,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:41,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719462239] [2021-11-09 10:40:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:41,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:41,486 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:41,492 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:41,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:41,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:40:41,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:40:41,516 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:41,543 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-09 10:40:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:40:41,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2021-11-09 10:40:41,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:41,544 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 18 states and 20 transitions. [2021-11-09 10:40:41,544 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-09 10:40:41,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-11-09 10:40:41,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 20 transitions. [2021-11-09 10:40:41,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 10:40:41,545 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-11-09 10:40:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 20 transitions. [2021-11-09 10:40:41,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-11-09 10:40:41,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-09 10:40:41,549 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-09 10:40:41,549 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-09 10:40:41,549 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-09 10:40:41,549 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2021-11-09 10:40:41,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:41,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 10:40:41,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 10:40:41,551 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:41,551 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-09 10:40:41,552 INFO L791 eck$LassoCheckResult]: Stem: 598#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 599#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 596#L22 assume !(gcd_test_~a < 0); 597#L22-2 assume !(gcd_test_~b < 0); 600#L23-1 assume !(0 == gcd_test_~a); 601#L30-2 assume !!(0 != gcd_test_~b); 607#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 606#L30-2 assume !!(0 != gcd_test_~b); 605#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 604#L30-2 assume !!(0 != gcd_test_~b); 603#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 602#L30-2 assume !!(0 != gcd_test_~b); 594#L30 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 593#L30-2 assume !!(0 != gcd_test_~b); 595#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 591#L30-2 [2021-11-09 10:40:41,552 INFO L793 eck$LassoCheckResult]: Loop: 591#L30-2 assume !!(0 != gcd_test_~b); 592#L30 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 591#L30-2 [2021-11-09 10:40:41,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:41,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1044312667, now seen corresponding path program 4 times [2021-11-09 10:40:41,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:41,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490286962] [2021-11-09 10:40:41,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:41,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:41,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:41,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490286962] [2021-11-09 10:40:41,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490286962] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:41,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873087580] [2021-11-09 10:40:41,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:40:41,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:41,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:41,643 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:41,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-09 10:40:41,748 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:40:41,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:41,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:40:41,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:41,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873087580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:41,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:40:41,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-11-09 10:40:41,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816144843] [2021-11-09 10:40:41,950 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-09 10:40:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 7 times [2021-11-09 10:40:41,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:41,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245220018] [2021-11-09 10:40:41,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:41,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:41,957 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:41,963 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:41,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:41,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 10:40:41,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-09 10:40:41,985 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:42,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:42,073 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-11-09 10:40:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:40:42,074 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 23 transitions. [2021-11-09 10:40:42,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:42,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 22 transitions. [2021-11-09 10:40:42,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-09 10:40:42,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-11-09 10:40:42,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 22 transitions. [2021-11-09 10:40:42,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 10:40:42,076 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-09 10:40:42,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 22 transitions. [2021-11-09 10:40:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-11-09 10:40:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.105263157894737) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-09 10:40:42,078 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-09 10:40:42,078 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-09 10:40:42,078 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-09 10:40:42,078 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 21 transitions. [2021-11-09 10:40:42,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-09 10:40:42,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 10:40:42,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 10:40:42,080 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 2, 1, 1, 1, 1, 1] [2021-11-09 10:40:42,080 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-09 10:40:42,080 INFO L791 eck$LassoCheckResult]: Stem: 696#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 697#L-1 havoc main_#res;havoc main_#t~ret7, main_~x~0, main_~y~0, main_~g~0;havoc main_~x~0;havoc main_~y~0;havoc main_~g~0;main_~x~0 := 63;main_~y~0 := 18;gcd_test_#in~a, gcd_test_#in~b := main_~x~0, main_~y~0;havoc gcd_test_#res;havoc gcd_test_~a, gcd_test_~b;gcd_test_~a := gcd_test_#in~a;gcd_test_~b := gcd_test_#in~b; 692#L22 assume !(gcd_test_~a < 0); 693#L22-2 assume !(gcd_test_~b < 0); 698#L23-1 assume !(0 == gcd_test_~a); 699#L30-2 assume !!(0 != gcd_test_~b); 706#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 705#L30-2 assume !!(0 != gcd_test_~b); 704#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 703#L30-2 assume !!(0 != gcd_test_~b); 702#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 700#L30-2 assume !!(0 != gcd_test_~b); 701#L30 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 690#L30-2 assume !!(0 != gcd_test_~b); 691#L30 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 695#L30-2 assume !!(0 != gcd_test_~b); 694#L30 assume gcd_test_~a > gcd_test_~b;gcd_test_~a := gcd_test_~a - gcd_test_~b; 688#L30-2 [2021-11-09 10:40:42,080 INFO L793 eck$LassoCheckResult]: Loop: 688#L30-2 assume !!(0 != gcd_test_~b); 689#L30 assume !(gcd_test_~a > gcd_test_~b);gcd_test_~b := gcd_test_~b - gcd_test_~a; 688#L30-2 [2021-11-09 10:40:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:42,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1437871456, now seen corresponding path program 5 times [2021-11-09 10:40:42,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:42,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994396488] [2021-11-09 10:40:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:42,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:42,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:42,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994396488] [2021-11-09 10:40:42,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994396488] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:42,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453000556] [2021-11-09 10:40:42,234 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:40:42,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:42,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:42,238 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:42,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-09 10:40:42,340 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-09 10:40:42,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:42,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 10:40:42,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:42,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453000556] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:42,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:40:42,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-09 10:40:42,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194510948] [2021-11-09 10:40:42,607 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-09 10:40:42,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 8 times [2021-11-09 10:40:42,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:42,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705214161] [2021-11-09 10:40:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:42,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:42,617 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:40:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:40:42,622 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:40:42,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:42,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 10:40:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-09 10:40:42,645 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. cyclomatic complexity: 4 Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:42,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:42,849 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-11-09 10:40:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:40:42,849 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 15 transitions. [2021-11-09 10:40:42,850 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-09 10:40:42,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2021-11-09 10:40:42,850 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-09 10:40:42,850 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-09 10:40:42,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-09 10:40:42,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 10:40:42,850 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 10:40:42,851 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 10:40:42,851 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 10:40:42,851 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-09 10:40:42,851 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-09 10:40:42,851 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-09 10:40:42,851 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-09 10:40:42,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 10:40:42 BoogieIcfgContainer [2021-11-09 10:40:42,856 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-09 10:40:42,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:40:42,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:40:42,857 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:40:42,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:40:36" (3/4) ... [2021-11-09 10:40:42,861 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 10:40:42,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:40:42,863 INFO L168 Benchmark]: Toolchain (without parser) took 7444.80 ms. Allocated memory was 100.7 MB in the beginning and 163.6 MB in the end (delta: 62.9 MB). Free memory was 63.2 MB in the beginning and 106.3 MB in the end (delta: -43.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2021-11-09 10:40:42,864 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 100.7 MB. Free memory was 79.4 MB in the beginning and 79.3 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:40:42,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.10 ms. Allocated memory is still 100.7 MB. Free memory was 63.0 MB in the beginning and 53.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:40:42,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.50 ms. Allocated memory is still 100.7 MB. Free memory was 53.5 MB in the beginning and 51.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:40:42,865 INFO L168 Benchmark]: Boogie Preprocessor took 23.46 ms. Allocated memory is still 100.7 MB. Free memory was 51.9 MB in the beginning and 50.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:40:42,866 INFO L168 Benchmark]: RCFGBuilder took 437.87 ms. Allocated memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: 35.7 MB). Free memory was 50.8 MB in the beginning and 106.3 MB in the end (delta: -55.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2021-11-09 10:40:42,866 INFO L168 Benchmark]: BuchiAutomizer took 6678.82 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 106.3 MB in the beginning and 106.3 MB in the end (delta: -20.9 kB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2021-11-09 10:40:42,867 INFO L168 Benchmark]: Witness Printer took 4.81 ms. Allocated memory is still 163.6 MB. Free memory is still 106.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:40:42,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 100.7 MB. Free memory was 79.4 MB in the beginning and 79.3 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.10 ms. Allocated memory is still 100.7 MB. Free memory was 63.0 MB in the beginning and 53.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.50 ms. Allocated memory is still 100.7 MB. Free memory was 53.5 MB in the beginning and 51.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.46 ms. Allocated memory is still 100.7 MB. Free memory was 51.9 MB in the beginning and 50.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 437.87 ms. Allocated memory was 100.7 MB in the beginning and 136.3 MB in the end (delta: 35.7 MB). Free memory was 50.8 MB in the beginning and 106.3 MB in the end (delta: -55.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6678.82 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 106.3 MB in the beginning and 106.3 MB in the end (delta: -20.9 kB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.81 ms. Allocated memory is still 163.6 MB. Free memory is still 106.3 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 8 terminating modules (7 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has affine ranking function b and consists of 7 locations. 7 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.6s and 9 iterations. TraceHistogramMax:6. Analysis of lassos took 4.9s. Construction of modules took 0.2s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 7. Nontrivial modules had stage [0, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 56 SDtfs, 93 SDslu, 47 SDs, 0 SdLazy, 293 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc3 concLT0 SILN4 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital141 mio100 ax100 hnf98 lsp66 ukn47 mio100 lsp81 div100 bol100 ite100 ukn100 eq205 hnf90 smp100 dnf122 smp100 tf100 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 170ms VariablesStem: 6 VariablesLoop: 3 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! [2021-11-09 10:40:42,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:43,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:43,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:43,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:43,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:43,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f15cc4c2-801c-4071-a3f5-2593569e60e0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE