./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array14_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array14_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a0f9dc1e3a944fe0c87fb9c3f72dec5466e715e61eb5b701f6540feca3c935ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:31:58,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:31:58,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:31:58,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:31:58,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:31:58,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:31:58,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:31:58,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:31:58,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:31:58,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:31:58,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:31:58,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:31:58,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:31:58,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:31:58,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:31:58,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:31:58,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:31:58,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:31:58,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:31:58,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:31:58,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:31:58,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:31:58,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:31:58,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:31:58,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:31:58,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:31:58,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:31:58,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:31:58,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:31:58,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:31:58,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:31:58,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:31:58,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:31:58,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:31:58,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:31:58,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:31:58,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:31:58,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:31:58,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:31:58,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:31:58,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:31:58,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 05:31:58,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:31:58,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:31:58,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:31:58,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:31:58,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:31:58,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:31:58,897 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:31:58,897 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 05:31:58,897 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 05:31:58,897 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 05:31:58,898 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 05:31:58,899 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 05:31:58,899 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 05:31:58,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:31:58,899 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:31:58,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:31:58,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:31:58,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 05:31:58,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 05:31:58,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 05:31:58,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:31:58,901 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 05:31:58,901 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:31:58,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 05:31:58,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:31:58,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:31:58,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:31:58,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:31:58,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:31:58,905 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 05:31:58,906 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_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0f9dc1e3a944fe0c87fb9c3f72dec5466e715e61eb5b701f6540feca3c935ad [2021-11-20 05:31:59,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:31:59,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:31:59,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:31:59,197 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:31:59,198 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:31:59,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-15/array14_alloca.i [2021-11-20 05:31:59,299 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/data/3091524c2/223b9f4431644b4c9bbb81ddf62d8741/FLAG99aa092fd [2021-11-20 05:31:59,883 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:31:59,888 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/sv-benchmarks/c/termination-15/array14_alloca.i [2021-11-20 05:31:59,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/data/3091524c2/223b9f4431644b4c9bbb81ddf62d8741/FLAG99aa092fd [2021-11-20 05:32:00,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/data/3091524c2/223b9f4431644b4c9bbb81ddf62d8741 [2021-11-20 05:32:00,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:32:00,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:32:00,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:32:00,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:32:00,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:32:00,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@775da5fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00, skipping insertion in model container [2021-11-20 05:32:00,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:32:00,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:32:00,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:32:00,647 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:32:00,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:32:00,756 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:32:00,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00 WrapperNode [2021-11-20 05:32:00,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:32:00,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:32:00,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:32:00,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:32:00,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,819 INFO L137 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-11-20 05:32:00,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:32:00,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:32:00,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:32:00,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:32:00,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:32:00,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:32:00,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:32:00,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:32:00,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00" (1/1) ... [2021-11-20 05:32:00,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:00,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:00,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:00,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 05:32:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:32:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:32:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:32:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:32:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:32:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:32:00,994 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:32:00,995 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:32:01,115 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:32:01,121 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:32:01,121 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 05:32:01,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:01 BoogieIcfgContainer [2021-11-20 05:32:01,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:32:01,124 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 05:32:01,125 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 05:32:01,128 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 05:32:01,129 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 05:32:01,129 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 05:32:00" (1/3) ... [2021-11-20 05:32:01,130 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34f6e2b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:32:01, skipping insertion in model container [2021-11-20 05:32:01,130 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 05:32:01,130 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:00" (2/3) ... [2021-11-20 05:32:01,131 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34f6e2b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:32:01, skipping insertion in model container [2021-11-20 05:32:01,131 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 05:32:01,131 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:01" (3/3) ... [2021-11-20 05:32:01,132 INFO L388 chiAutomizerObserver]: Analyzing ICFG array14_alloca.i [2021-11-20 05:32:01,179 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 05:32:01,180 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 05:32:01,180 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 05:32:01,180 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 05:32:01,180 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 05:32:01,180 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 05:32:01,180 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 05:32:01,181 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 05:32:01,195 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:01,214 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-11-20 05:32:01,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:32:01,214 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:32:01,220 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-20 05:32:01,220 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 05:32:01,220 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 05:32:01,221 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:01,222 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-11-20 05:32:01,222 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:32:01,222 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:32:01,223 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-20 05:32:01,223 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 05:32:01,230 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 11#L367true assume !(main_~length~0#1 < 1); 8#L367-2true call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 5#L369true assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 6#L370-3true [2021-11-20 05:32:01,230 INFO L793 eck$LassoCheckResult]: Loop: 6#L370-3true assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 13#L372true assume main_#t~mem209#1 > 0;havoc main_#t~mem209#1;call write~int(0, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 16#L370-2true main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 6#L370-3true [2021-11-20 05:32:01,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:01,236 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2021-11-20 05:32:01,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:01,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010178397] [2021-11-20 05:32:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:01,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:01,391 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:01,443 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:01,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:01,446 INFO L85 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2021-11-20 05:32:01,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:01,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261721143] [2021-11-20 05:32:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:01,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:01,476 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:01,501 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:01,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:01,504 INFO L85 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2021-11-20 05:32:01,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:01,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467370513] [2021-11-20 05:32:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:01,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:01,532 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:01,551 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:01,934 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 05:32:01,935 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 05:32:01,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 05:32:01,935 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 05:32:01,935 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 05:32:01,935 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:01,936 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 05:32:01,936 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 05:32:01,936 INFO L133 ssoRankerPreferences]: Filename of dumped script: array14_alloca.i_Iteration1_Lasso [2021-11-20 05:32:01,936 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 05:32:01,940 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 05:32:01,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:01,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:01,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:01,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:01,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:02,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:02,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:02,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:02,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:02,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:02,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:02,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:02,321 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 05:32:02,344 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 05:32:02,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:02,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:02,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:02,356 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 [2021-11-20 05:32:02,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:02,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:02,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:02,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:02,367 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:02,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:02,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:02,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 05:32:02,384 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:02,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:02,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:02,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:02,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:02,428 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 [2021-11-20 05:32:02,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:02,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:02,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:02,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:02,442 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 05:32:02,442 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 05:32:02,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 05:32:02,460 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:02,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:02,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:02,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:02,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:02,500 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 [2021-11-20 05:32:02,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:02,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:02,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:02,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:02,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:02,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:02,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:02,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 05:32:02,528 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:02,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:02,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:02,572 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:02,580 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 [2021-11-20 05:32:02,589 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:02,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:02,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:02,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:02,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:02,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 05:32:02,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:02,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:02,608 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:02,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:02,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:02,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:02,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:02,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-20 05:32:02,634 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 [2021-11-20 05:32:02,641 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:02,641 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:02,641 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:02,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:02,642 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:02,642 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:02,642 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:02,653 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:02,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:02,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:02,694 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:02,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-20 05:32:02,700 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 [2021-11-20 05:32:02,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:02,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:02,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:02,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:02,715 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 05:32:02,715 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 05:32:02,729 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:02,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:02,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:02,768 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:02,774 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 [2021-11-20 05:32:02,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:02,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:02,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:02,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:02,786 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 05:32:02,787 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 05:32:02,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-20 05:32:02,804 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:02,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:02,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:02,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:02,848 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:02,856 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 [2021-11-20 05:32:02,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:02,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:02,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:02,866 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:02,875 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 05:32:02,875 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 05:32:02,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-20 05:32:02,896 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 05:32:02,932 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2021-11-20 05:32:02,932 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. [2021-11-20 05:32:02,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:02,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:02,936 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:02,941 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 05:32:02,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-20 05:32:02,965 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-20 05:32:02,965 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 05:32:02,965 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1, ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~arr~0#1.offset) = 1*v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1 - 4*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~arr~0#1.offset Supporting invariants [] [2021-11-20 05:32:03,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:03,016 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-11-20 05:32:03,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:03,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:32:03,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:03,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:32:03,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:03,175 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-20 05:32:03,176 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:03,220 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 50 transitions. Complement of second has 7 states. [2021-11-20 05:32:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-20 05:32:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2021-11-20 05:32:03,228 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-20 05:32:03,228 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:32:03,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-20 05:32:03,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:32:03,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 6 letters. [2021-11-20 05:32:03,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:32:03,230 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2021-11-20 05:32:03,233 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:32:03,237 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 12 states and 17 transitions. [2021-11-20 05:32:03,238 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-11-20 05:32:03,238 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-11-20 05:32:03,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-11-20 05:32:03,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:03,239 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-20 05:32:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-11-20 05:32:03,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-20 05:32:03,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 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) [2021-11-20 05:32:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2021-11-20 05:32:03,264 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-20 05:32:03,265 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-20 05:32:03,265 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 05:32:03,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2021-11-20 05:32:03,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:32:03,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:32:03,266 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:32:03,266 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:03,267 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 05:32:03,267 INFO L791 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 114#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 121#L367 assume !(main_~length~0#1 < 1); 115#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 116#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 117#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 118#L370-4 main_~j~0#1 := 0; 119#L378-2 [2021-11-20 05:32:03,267 INFO L793 eck$LassoCheckResult]: Loop: 119#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 120#L378 assume main_#t~mem210#1 < 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 119#L378-2 [2021-11-20 05:32:03,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:03,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2021-11-20 05:32:03,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:03,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323484368] [2021-11-20 05:32:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:03,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:03,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:03,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323484368] [2021-11-20 05:32:03,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323484368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:03,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:03,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:32:03,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286616783] [2021-11-20 05:32:03,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:03,321 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 05:32:03,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 1 times [2021-11-20 05:32:03,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:03,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906830191] [2021-11-20 05:32:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:03,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:03,328 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:03,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:03,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:03,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:32:03,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:32:03,392 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:03,423 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2021-11-20 05:32:03,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:32:03,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-11-20 05:32:03,425 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:32:03,426 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 19 transitions. [2021-11-20 05:32:03,426 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-11-20 05:32:03,426 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-11-20 05:32:03,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-11-20 05:32:03,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:32:03,427 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-11-20 05:32:03,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-11-20 05:32:03,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2021-11-20 05:32:03,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-11-20 05:32:03,429 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-20 05:32:03,429 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-20 05:32:03,429 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 05:32:03,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-11-20 05:32:03,430 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:32:03,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:32:03,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:32:03,431 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:03,431 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 05:32:03,431 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 154#L367 assume !(main_~length~0#1 < 1); 148#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 149#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 150#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 155#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 157#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 156#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 151#L370-4 main_~j~0#1 := 0; 152#L378-2 [2021-11-20 05:32:03,431 INFO L793 eck$LassoCheckResult]: Loop: 152#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 153#L378 assume main_#t~mem210#1 < 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 152#L378-2 [2021-11-20 05:32:03,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:03,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2021-11-20 05:32:03,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:03,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796564304] [2021-11-20 05:32:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:03,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:03,443 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:03,456 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:03,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 2 times [2021-11-20 05:32:03,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:03,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722978331] [2021-11-20 05:32:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:03,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:03,462 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:03,468 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:03,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1719996831, now seen corresponding path program 1 times [2021-11-20 05:32:03,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:03,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865633722] [2021-11-20 05:32:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:03,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:03,487 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:03,519 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:03,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:03,872 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 05:32:03,872 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 05:32:03,872 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 05:32:03,872 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 05:32:03,872 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 05:32:03,872 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:03,872 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 05:32:03,872 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 05:32:03,873 INFO L133 ssoRankerPreferences]: Filename of dumped script: array14_alloca.i_Iteration3_Lasso [2021-11-20 05:32:03,873 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 05:32:03,873 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 05:32:03,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:03,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:03,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:03,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:04,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:04,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:04,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:04,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:04,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:04,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:04,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:04,247 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 05:32:04,247 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 05:32:04,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:04,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:04,248 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:04,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-20 05:32:04,254 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 [2021-11-20 05:32:04,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:04,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:04,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:04,266 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:04,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:04,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:04,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:04,281 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:04,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:04,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:04,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:04,319 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:04,325 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 [2021-11-20 05:32:04,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:04,334 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:04,334 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:04,334 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:04,334 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:04,335 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:04,335 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:04,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-20 05:32:04,356 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:04,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:04,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:04,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:04,388 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:04,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-20 05:32:04,390 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 [2021-11-20 05:32:04,399 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:04,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:04,400 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:04,400 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:04,402 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 05:32:04,402 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 05:32:04,415 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:04,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:04,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:04,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:04,452 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:04,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-20 05:32:04,454 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 [2021-11-20 05:32:04,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:04,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:04,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:04,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:04,470 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 05:32:04,471 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 05:32:04,492 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 05:32:04,523 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2021-11-20 05:32:04,523 INFO L444 ModelExtractionUtils]: 6 out of 25 variables were initially zero. Simplification set additionally 16 variables to zero. [2021-11-20 05:32:04,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:04,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:04,526 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:04,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-20 05:32:04,562 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 05:32:04,574 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-20 05:32:04,575 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 05:32:04,575 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 2*ULTIMATE.start_main_~j~0#1 + 1 Supporting invariants [] [2021-11-20 05:32:04,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:04,627 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-11-20 05:32:04,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:04,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:32:04,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:04,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:32:04,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:04,702 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-20 05:32:04,702 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-11-20 05:32:04,712 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Result 16 states and 22 transitions. Complement of second has 5 states. [2021-11-20 05:32:04,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 05:32:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-11-20 05:32:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2021-11-20 05:32:04,714 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2021-11-20 05:32:04,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:32:04,714 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2021-11-20 05:32:04,715 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:32:04,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2021-11-20 05:32:04,715 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:32:04,715 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2021-11-20 05:32:04,716 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:32:04,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 22 transitions. [2021-11-20 05:32:04,718 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-11-20 05:32:04,718 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-20 05:32:04,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2021-11-20 05:32:04,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 05:32:04,718 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-11-20 05:32:04,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2021-11-20 05:32:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-20 05:32:04,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-11-20 05:32:04,720 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-11-20 05:32:04,720 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-11-20 05:32:04,720 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 05:32:04,720 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2021-11-20 05:32:04,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:32:04,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:32:04,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:32:04,722 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:04,722 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 05:32:04,722 INFO L791 eck$LassoCheckResult]: Stem: 243#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 244#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 254#L367 assume !(main_~length~0#1 < 1); 245#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 246#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 247#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 255#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 257#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 256#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 248#L370-4 main_~j~0#1 := 0; 249#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 250#L378 assume !(main_#t~mem210#1 < 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 251#L378-2 [2021-11-20 05:32:04,722 INFO L793 eck$LassoCheckResult]: Loop: 251#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 258#L378 assume main_#t~mem210#1 < 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 251#L378-2 [2021-11-20 05:32:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:04,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1719996833, now seen corresponding path program 1 times [2021-11-20 05:32:04,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:04,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044304253] [2021-11-20 05:32:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:04,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:04,754 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:04,777 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 3 times [2021-11-20 05:32:04,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:04,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361169718] [2021-11-20 05:32:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:04,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:04,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:04,802 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:04,819 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:04,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash -645451100, now seen corresponding path program 1 times [2021-11-20 05:32:04,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:04,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731085060] [2021-11-20 05:32:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:04,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:04,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:04,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731085060] [2021-11-20 05:32:05,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731085060] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:32:05,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833027555] [2021-11-20 05:32:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:05,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:05,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:05,008 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:05,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 05:32:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:05,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:32:05,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:05,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:05,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833027555] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:32:05,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:32:05,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2021-11-20 05:32:05,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040345111] [2021-11-20 05:32:05,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:32:05,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:05,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 05:32:05,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:32:05,257 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:05,414 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2021-11-20 05:32:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:32:05,415 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 45 transitions. [2021-11-20 05:32:05,416 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:32:05,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 21 states and 28 transitions. [2021-11-20 05:32:05,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-11-20 05:32:05,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-20 05:32:05,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2021-11-20 05:32:05,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 05:32:05,417 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2021-11-20 05:32:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2021-11-20 05:32:05,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-20 05:32:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-11-20 05:32:05,420 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-20 05:32:05,420 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-20 05:32:05,420 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-20 05:32:05,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 25 transitions. [2021-11-20 05:32:05,421 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:32:05,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:32:05,421 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:32:05,421 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:05,421 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 05:32:05,422 INFO L791 eck$LassoCheckResult]: Stem: 398#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 399#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 409#L367 assume !(main_~length~0#1 < 1); 400#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 401#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 402#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 410#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 415#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 411#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 412#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 413#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 416#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 403#L370-4 main_~j~0#1 := 0; 404#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 405#L378 assume !(main_#t~mem210#1 < 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 406#L378-2 [2021-11-20 05:32:05,422 INFO L793 eck$LassoCheckResult]: Loop: 406#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 414#L378 assume main_#t~mem210#1 < 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 406#L378-2 [2021-11-20 05:32:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:05,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1238701285, now seen corresponding path program 2 times [2021-11-20 05:32:05,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:05,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121372884] [2021-11-20 05:32:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:05,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:05,438 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:05,453 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:05,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:05,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 4 times [2021-11-20 05:32:05,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:05,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970359251] [2021-11-20 05:32:05,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:05,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:05,457 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:05,461 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:05,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:05,462 INFO L85 PathProgramCache]: Analyzing trace with hash -685992546, now seen corresponding path program 2 times [2021-11-20 05:32:05,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:05,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184605580] [2021-11-20 05:32:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:05,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:05,486 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:05,511 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:05,911 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 05:32:05,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 05:32:05,912 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 05:32:05,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 05:32:05,912 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 05:32:05,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:05,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 05:32:05,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 05:32:05,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: array14_alloca.i_Iteration5_Lasso [2021-11-20 05:32:05,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 05:32:05,912 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 05:32:05,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:05,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:05,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:05,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:05,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:05,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:05,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:05,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:06,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:06,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:06,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 05:32:06,294 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 05:32:06,294 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 05:32:06,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:06,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:06,299 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:06,312 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 [2021-11-20 05:32:06,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:06,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:06,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:06,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:06,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:06,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:06,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:06,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-20 05:32:06,344 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:06,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:06,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:06,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:06,381 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:06,388 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 [2021-11-20 05:32:06,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:06,397 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:06,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:06,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:06,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:06,397 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:06,398 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:06,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-20 05:32:06,408 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:06,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:06,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:06,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:06,444 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:06,452 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 [2021-11-20 05:32:06,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:06,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:06,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:06,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:06,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:06,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:06,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:06,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-20 05:32:06,472 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:06,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:06,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:06,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:06,495 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:06,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-20 05:32:06,498 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 [2021-11-20 05:32:06,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:06,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:06,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:06,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:06,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:06,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:06,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:06,512 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:06,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:06,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:06,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:06,535 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:06,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-20 05:32:06,536 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 [2021-11-20 05:32:06,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:06,543 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:06,543 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:06,543 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:06,545 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 05:32:06,546 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 05:32:06,560 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:06,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-11-20 05:32:06,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:06,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:06,581 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:06,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-20 05:32:06,583 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 [2021-11-20 05:32:06,589 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:06,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:06,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:06,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:06,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:06,590 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:06,590 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:06,599 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:06,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:06,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:06,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:06,619 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:06,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-20 05:32:06,621 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 05:32:06,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:06,628 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 05:32:06,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:06,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:06,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:06,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 05:32:06,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 05:32:06,645 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 05:32:06,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-11-20 05:32:06,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:06,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:06,666 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:06,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-20 05:32:06,667 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 [2021-11-20 05:32:06,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 05:32:06,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 05:32:06,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 05:32:06,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 05:32:06,689 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 05:32:06,690 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 05:32:06,711 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 05:32:06,722 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-20 05:32:06,722 INFO L444 ModelExtractionUtils]: 12 out of 25 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-11-20 05:32:06,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:32:06,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:06,724 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:06,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-20 05:32:06,725 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 05:32:06,732 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-20 05:32:06,732 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 05:32:06,732 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 2*ULTIMATE.start_main_~j~0#1 + 1 Supporting invariants [] [2021-11-20 05:32:06,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:06,769 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2021-11-20 05:32:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:06,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:32:06,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:06,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:32:06,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:06,854 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-20 05:32:06,854 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-11-20 05:32:06,866 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) Result 23 states and 31 transitions. Complement of second has 5 states. [2021-11-20 05:32:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 05:32:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-11-20 05:32:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2021-11-20 05:32:06,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 15 letters. Loop has 2 letters. [2021-11-20 05:32:06,868 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:32:06,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 17 letters. Loop has 2 letters. [2021-11-20 05:32:06,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:32:06,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2021-11-20 05:32:06,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 05:32:06,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 31 transitions. [2021-11-20 05:32:06,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:32:06,871 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 31 transitions. [2021-11-20 05:32:06,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-11-20 05:32:06,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-11-20 05:32:06,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2021-11-20 05:32:06,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 05:32:06,871 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-11-20 05:32:06,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2021-11-20 05:32:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-20 05:32:06,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 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) [2021-11-20 05:32:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-11-20 05:32:06,874 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-11-20 05:32:06,874 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-11-20 05:32:06,875 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-20 05:32:06,875 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 31 transitions. [2021-11-20 05:32:06,875 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 05:32:06,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:32:06,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:32:06,876 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:06,876 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 05:32:06,877 INFO L791 eck$LassoCheckResult]: Stem: 528#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 529#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 539#L367 assume !(main_~length~0#1 < 1); 530#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 531#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 532#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 540#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 545#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 541#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 542#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 544#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 546#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 537#L370-4 main_~j~0#1 := 0; 538#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 548#L378 assume !(main_#t~mem210#1 < 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 547#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 533#L378 assume !(main_#t~mem210#1 < 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 534#L378-2 [2021-11-20 05:32:06,877 INFO L793 eck$LassoCheckResult]: Loop: 534#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 543#L378 assume main_#t~mem210#1 < 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 534#L378-2 [2021-11-20 05:32:06,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash -685992544, now seen corresponding path program 3 times [2021-11-20 05:32:06,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:06,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057274981] [2021-11-20 05:32:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:06,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:06,892 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:06,908 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:06,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:06,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 5 times [2021-11-20 05:32:06,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:06,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830534507] [2021-11-20 05:32:06,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:06,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:06,912 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:06,916 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:06,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:06,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2108837149, now seen corresponding path program 3 times [2021-11-20 05:32:06,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:06,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49704481] [2021-11-20 05:32:06,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:06,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:07,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:07,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49704481] [2021-11-20 05:32:07,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49704481] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:32:07,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132321464] [2021-11-20 05:32:07,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:32:07,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:07,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:07,065 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:07,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-20 05:32:07,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 05:32:07,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:32:07,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:32:07,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:07,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:07,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132321464] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:32:07,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:32:07,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2021-11-20 05:32:07,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305473065] [2021-11-20 05:32:07,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:32:07,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:07,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:07,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:32:07,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-11-20 05:32:07,416 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. cyclomatic complexity: 12 Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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) [2021-11-20 05:32:07,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:07,648 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2021-11-20 05:32:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:32:07,650 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 65 transitions. [2021-11-20 05:32:07,652 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-11-20 05:32:07,653 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 46 states and 62 transitions. [2021-11-20 05:32:07,653 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-11-20 05:32:07,653 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-11-20 05:32:07,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2021-11-20 05:32:07,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 05:32:07,653 INFO L681 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2021-11-20 05:32:07,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2021-11-20 05:32:07,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2021-11-20 05:32:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 38 states have internal predecessors, (53), 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) [2021-11-20 05:32:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2021-11-20 05:32:07,657 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2021-11-20 05:32:07,657 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2021-11-20 05:32:07,657 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-20 05:32:07,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 53 transitions. [2021-11-20 05:32:07,658 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-20 05:32:07,658 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:32:07,658 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:32:07,659 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:07,659 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-11-20 05:32:07,659 INFO L791 eck$LassoCheckResult]: Stem: 742#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 743#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 753#L367 assume !(main_~length~0#1 < 1); 744#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 745#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 746#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 754#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 767#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 755#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 756#L372 assume !(main_#t~mem209#1 > 0);havoc main_#t~mem209#1; 763#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 764#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 751#L370-4 main_~j~0#1 := 0; 752#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 747#L378 assume !(main_#t~mem210#1 < 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 748#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 749#L378 assume main_#t~mem210#1 < 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 750#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 773#L378 assume !(main_#t~mem210#1 < 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 772#L378-2 [2021-11-20 05:32:07,659 INFO L793 eck$LassoCheckResult]: Loop: 772#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 768#L378 assume main_#t~mem210#1 < 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 757#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 758#L378 assume !(main_#t~mem210#1 < 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 772#L378-2 [2021-11-20 05:32:07,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:07,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2108839069, now seen corresponding path program 4 times [2021-11-20 05:32:07,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:07,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205951959] [2021-11-20 05:32:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:07,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:07,690 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:07,721 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:07,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2219337, now seen corresponding path program 1 times [2021-11-20 05:32:07,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:07,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251031585] [2021-11-20 05:32:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:07,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:07,735 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:07,743 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:07,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:07,744 INFO L85 PathProgramCache]: Analyzing trace with hash 50792363, now seen corresponding path program 5 times [2021-11-20 05:32:07,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:07,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072272865] [2021-11-20 05:32:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:07,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:07,767 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:32:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:32:07,804 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:32:08,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 05:32:08 BoogieIcfgContainer [2021-11-20 05:32:08,412 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 05:32:08,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:32:08,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:32:08,413 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:32:08,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:01" (3/4) ... [2021-11-20 05:32:08,415 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-20 05:32:08,484 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3acf509-7bbb-4a1f-8700-b14a0ede3d8d/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 05:32:08,484 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:32:08,485 INFO L158 Benchmark]: Toolchain (without parser) took 8266.41ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 75.8MB in the beginning and 38.6MB in the end (delta: 37.1MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. [2021-11-20 05:32:08,486 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 79.7MB. Free memory was 38.0MB in the beginning and 38.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:32:08,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.80ms. Allocated memory is still 109.1MB. Free memory was 75.6MB in the beginning and 77.0MB in the end (delta: -1.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 05:32:08,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.78ms. Allocated memory is still 109.1MB. Free memory was 77.0MB in the beginning and 75.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:32:08,487 INFO L158 Benchmark]: Boogie Preprocessor took 31.74ms. Allocated memory is still 109.1MB. Free memory was 75.2MB in the beginning and 74.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:32:08,488 INFO L158 Benchmark]: RCFGBuilder took 270.79ms. Allocated memory is still 109.1MB. Free memory was 74.2MB in the beginning and 64.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:32:08,489 INFO L158 Benchmark]: BuchiAutomizer took 7287.58ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 64.3MB in the beginning and 40.7MB in the end (delta: 23.7MB). Peak memory consumption was 53.7MB. Max. memory is 16.1GB. [2021-11-20 05:32:08,489 INFO L158 Benchmark]: Witness Printer took 71.68ms. Allocated memory is still 136.3MB. Free memory was 40.7MB in the beginning and 38.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:32:08,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 79.7MB. Free memory was 38.0MB in the beginning and 38.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.80ms. Allocated memory is still 109.1MB. Free memory was 75.6MB in the beginning and 77.0MB in the end (delta: -1.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.78ms. Allocated memory is still 109.1MB. Free memory was 77.0MB in the beginning and 75.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.74ms. Allocated memory is still 109.1MB. Free memory was 75.2MB in the beginning and 74.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.79ms. Allocated memory is still 109.1MB. Free memory was 74.2MB in the beginning and 64.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 7287.58ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 64.3MB in the beginning and 40.7MB in the end (delta: 23.7MB). Peak memory consumption was 53.7MB. Max. memory is 16.1GB. * Witness Printer took 71.68ms. Allocated memory is still 136.3MB. Free memory was 40.7MB in the beginning and 38.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 3 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -4 * i + unknown-#length-unknown[arr] + -1 * arr and consists of 5 locations. One deterministic module has affine ranking function 2 * j + 1 and consists of 3 locations. One deterministic module has affine ranking function 2 * j + 1 and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 20 locations. The remainder module has 39 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.2s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 6.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 39 states and ocurred in iteration 6. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 144 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 154 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 276 IncrementalHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 64 mSDtfsCounter, 276 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN0 SILU1 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital127 mio100 ax100 hnf99 lsp94 ukn83 mio100 lsp59 div100 bol100 ite100 ukn100 eq164 hnf92 smp96 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 39ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 377]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {j=1, arr=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28da162e=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@899a32f=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@899a32f=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@51067905=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7f8be14d=0, length=2, i=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7b2fb10e=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@d02bc8e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@6954e336=0, arr=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@538f68e4=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 377]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i 0) [L370] i++ [L370] COND TRUE i 0) [L370] i++ [L370] COND FALSE !(i