./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G --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 27dab8f9dd6de13395a492c9fbbcffd97b1fd9082fe91b0943ef2aaae430e414 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:36:42,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:36:42,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:36:42,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:36:42,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:36:42,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:36:42,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:36:42,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:36:42,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:36:42,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:36:42,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:36:42,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:36:42,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:36:42,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:36:42,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:36:42,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:36:42,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:36:42,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:36:42,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:36:42,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:36:42,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:36:42,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:36:42,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:36:42,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:36:42,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:36:42,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:36:42,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:36:42,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:36:42,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:36:42,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:36:42,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:36:42,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:36:42,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:36:42,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:36:42,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:36:42,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:36:42,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:36:42,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:36:42,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:36:42,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:36:42,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:36:42,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-23 13:36:42,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:36:42,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:36:42,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:36:42,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:36:42,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:36:42,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:36:42,799 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:36:42,799 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-23 13:36:42,800 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-23 13:36:42,800 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-23 13:36:42,800 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-23 13:36:42,800 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-23 13:36:42,801 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-23 13:36:42,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:36:42,801 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:36:42,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:36:42,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:36:42,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-23 13:36:42,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-23 13:36:42,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-23 13:36:42,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:36:42,803 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-23 13:36:42,803 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:36:42,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-23 13:36:42,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:36:42,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:36:42,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:36:42,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:36:42,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:36:42,806 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-23 13:36:42,806 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_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27dab8f9dd6de13395a492c9fbbcffd97b1fd9082fe91b0943ef2aaae430e414 [2021-11-23 13:36:43,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:36:43,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:36:43,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:36:43,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:36:43,169 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:36:43,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2021-11-23 13:36:43,259 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/data/5c2291dfe/b4b773ec0aeb465eb6c42a3487c664c7/FLAGf55ad163a [2021-11-23 13:36:43,755 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:36:43,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2021-11-23 13:36:43,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/data/5c2291dfe/b4b773ec0aeb465eb6c42a3487c664c7/FLAGf55ad163a [2021-11-23 13:36:44,126 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/data/5c2291dfe/b4b773ec0aeb465eb6c42a3487c664c7 [2021-11-23 13:36:44,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:36:44,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:36:44,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:36:44,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:36:44,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:36:44,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4579c5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44, skipping insertion in model container [2021-11-23 13:36:44,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:36:44,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:36:44,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:36:44,366 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:36:44,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:36:44,417 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:36:44,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44 WrapperNode [2021-11-23 13:36:44,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:36:44,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:36:44,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:36:44,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:36:44,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,459 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2021-11-23 13:36:44,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:36:44,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:36:44,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:36:44,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:36:44,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:36:44,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:36:44,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:36:44,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:36:44,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44" (1/1) ... [2021-11-23 13:36:44,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:44,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:44,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:44,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-23 13:36:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:36:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:36:44,633 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:36:44,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:36:44,758 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:36:44,768 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:36:44,768 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:36:44,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:36:44 BoogieIcfgContainer [2021-11-23 13:36:44,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:36:44,773 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-23 13:36:44,773 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-23 13:36:44,777 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-23 13:36:44,778 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:36:44,778 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:36:44" (1/3) ... [2021-11-23 13:36:44,780 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41d4826d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:36:44, skipping insertion in model container [2021-11-23 13:36:44,780 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:36:44,780 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:44" (2/3) ... [2021-11-23 13:36:44,781 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41d4826d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:36:44, skipping insertion in model container [2021-11-23 13:36:44,781 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:36:44,781 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:36:44" (3/3) ... [2021-11-23 13:36:44,784 INFO L388 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum.c [2021-11-23 13:36:44,876 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-23 13:36:44,876 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-23 13:36:44,877 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-23 13:36:44,877 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-23 13:36:44,877 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-23 13:36:44,877 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-23 13:36:44,877 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-23 13:36:44,877 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-23 13:36:44,898 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) 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) [2021-11-23 13:36:44,925 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-23 13:36:44,926 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:44,926 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:44,932 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 13:36:44,933 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:36:44,933 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-23 13:36:44,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) 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) [2021-11-23 13:36:44,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-23 13:36:44,935 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:44,935 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:44,936 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 13:36:44,936 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:36:44,944 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 13#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L25-2true [2021-11-23 13:36:44,944 INFO L793 eck$LassoCheckResult]: Loop: 4#L25-2true assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 9#L25true assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 11#L26true assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 8#L26-2true main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 4#L25-2true [2021-11-23 13:36:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-23 13:36:44,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:44,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518437559] [2021-11-23 13:36:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:44,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:45,058 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:45,086 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:45,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:45,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1265224, now seen corresponding path program 1 times [2021-11-23 13:36:45,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:45,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154050222] [2021-11-23 13:36:45,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:45,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:45,118 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:45,141 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:45,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:45,143 INFO L85 PathProgramCache]: Analyzing trace with hash 889692426, now seen corresponding path program 1 times [2021-11-23 13:36:45,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:45,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977069410] [2021-11-23 13:36:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:45,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:45,160 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:45,183 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:45,308 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:45,309 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:45,309 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:45,309 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:45,309 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:36:45,309 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:45,309 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:45,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:45,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2021-11-23 13:36:45,310 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:45,310 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:45,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:45,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:45,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:45,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:45,547 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:45,548 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:36:45,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:45,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:45,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:45,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-23 13:36:45,585 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:45,585 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:45,615 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:45,615 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:45,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:45,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:45,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:45,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:45,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-23 13:36:45,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:45,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:45,688 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:45,688 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:45,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:45,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:45,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:45,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:45,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:45,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:45,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-23 13:36:45,766 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:45,766 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:45,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:45,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:45,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:45,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:45,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:45,817 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:45,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-23 13:36:45,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:45,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:45,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:45,892 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:45,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:36:45,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:45,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-23 13:36:46,016 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:36:46,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:46,024 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:46,024 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:46,025 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:46,025 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:46,025 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:36:46,025 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:46,025 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:46,025 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:46,025 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2021-11-23 13:36:46,025 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:46,025 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:46,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:46,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:46,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:46,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:46,106 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:46,111 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:36:46,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:46,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:46,113 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:46,119 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 [2021-11-23 13:36:46,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:46,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:46,129 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:46,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:46,134 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:36:46,135 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:36:46,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-23 13:36:46,148 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:46,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:46,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:46,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:46,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:46,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-23 13:36:46,189 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 [2021-11-23 13:36:46,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:46,199 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:46,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:46,200 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-23 13:36:46,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:46,202 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-23 13:36:46,202 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:46,224 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:46,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:46,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:46,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:46,264 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:46,273 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 [2021-11-23 13:36:46,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:46,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:46,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:46,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:46,289 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:36:46,289 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:36:46,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-23 13:36:46,312 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:46,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:46,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:46,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:46,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:46,361 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 [2021-11-23 13:36:46,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:46,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:46,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:46,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:46,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:46,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-23 13:36:46,377 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:46,377 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:46,416 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:36:46,421 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:36:46,421 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:36:46,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:46,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:46,428 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:46,438 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:36:46,438 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:36:46,438 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:36:46,439 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-11-23 13:36:46,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-23 13:36:46,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:46,478 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:36:46,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:46,507 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:46,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:46,521 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:36:46,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:46,655 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 13:36:46,656 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-11-23 13:36:46,739 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) 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). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 56 transitions. Complement of second has 8 states. [2021-11-23 13:36:46,740 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 [2021-11-23 13:36:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-11-23 13:36:46,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-11-23 13:36:46,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-23 13:36:46,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:46,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 6 letters. Loop has 4 letters. [2021-11-23 13:36:46,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:46,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 8 letters. [2021-11-23 13:36:46,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:46,754 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 56 transitions. [2021-11-23 13:36:46,763 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-23 13:36:46,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 22 states and 31 transitions. [2021-11-23 13:36:46,769 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-23 13:36:46,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-11-23 13:36:46,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2021-11-23 13:36:46,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:36:46,771 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-11-23 13:36:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2021-11-23 13:36:46,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-11-23 13:36:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 17 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) [2021-11-23 13:36:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2021-11-23 13:36:46,799 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-11-23 13:36:46,799 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-11-23 13:36:46,799 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-23 13:36:46,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2021-11-23 13:36:46,805 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-23 13:36:46,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:46,805 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:46,806 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-23 13:36:46,807 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:36:46,808 INFO L791 eck$LassoCheckResult]: Stem: 104#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 105#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 115#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 116#L25 [2021-11-23 13:36:46,808 INFO L793 eck$LassoCheckResult]: Loop: 116#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 113#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 106#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 107#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 116#L25 [2021-11-23 13:36:46,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:46,815 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-11-23 13:36:46,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:46,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077428660] [2021-11-23 13:36:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:46,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:46,819 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:46,822 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:46,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1359516, now seen corresponding path program 1 times [2021-11-23 13:36:46,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:46,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320876005] [2021-11-23 13:36:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:46,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:46,838 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:46,855 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:46,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:46,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1810663363, now seen corresponding path program 1 times [2021-11-23 13:36:46,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:46,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352750934] [2021-11-23 13:36:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:46,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:46,869 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:46,875 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:46,932 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:46,933 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:46,933 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:46,933 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:46,933 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:36:46,933 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:46,933 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:46,933 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:46,933 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2021-11-23 13:36:46,933 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:46,934 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:46,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:46,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:46,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:46,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:47,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:47,081 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:47,081 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:36:47,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:47,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:47,083 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:47,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:47,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:47,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-23 13:36:47,115 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:47,115 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:47,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:47,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:47,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:47,155 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:47,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-23 13:36:47,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:47,162 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:47,176 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:47,176 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:47,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:47,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:47,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:47,214 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:47,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-23 13:36:47,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:47,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:47,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:47,247 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:47,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:47,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:47,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:47,288 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:47,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:47,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:47,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-23 13:36:47,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:47,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:47,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:47,367 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:47,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:36:47,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:47,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-23 13:36:47,549 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:36:47,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:47,555 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:47,555 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:47,555 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:47,555 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:47,555 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:36:47,555 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:47,555 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:47,555 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:47,555 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2021-11-23 13:36:47,555 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:47,556 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:47,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:47,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:47,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:47,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:47,673 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:47,673 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:36:47,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:47,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:47,677 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:47,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-23 13:36:47,682 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 [2021-11-23 13:36:47,691 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:47,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:47,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:47,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:47,695 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:36:47,695 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:36:47,709 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:47,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:47,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:47,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:47,738 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:47,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-23 13:36:47,742 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 [2021-11-23 13:36:47,751 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:47,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:47,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:47,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:47,761 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:36:47,761 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:36:47,780 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:47,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:47,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:47,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:47,802 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:47,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-23 13:36:47,804 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 [2021-11-23 13:36:47,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:47,811 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:47,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:47,812 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-23 13:36:47,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:47,813 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-23 13:36:47,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:47,844 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:47,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:47,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:47,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:47,879 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:47,893 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 [2021-11-23 13:36:47,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-23 13:36:47,902 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:47,902 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:47,902 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:47,902 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:47,902 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:47,905 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:47,905 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:47,918 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:36:47,922 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 13:36:47,922 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:36:47,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:47,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:47,924 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:47,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-23 13:36:47,961 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:36:47,961 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:36:47,961 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:36:47,961 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-11-23 13:36:47,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:47,999 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:36:48,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:48,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:48,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:48,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:48,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:48,083 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 [2021-11-23 13:36:48,085 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 10 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) [2021-11-23 13:36:48,128 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 10. 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) Result 31 states and 45 transitions. Complement of second has 7 states. [2021-11-23 13:36:48,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2021-11-23 13:36:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-11-23 13:36:48,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2021-11-23 13:36:48,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:48,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2021-11-23 13:36:48,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:48,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2021-11-23 13:36:48,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:48,131 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 45 transitions. [2021-11-23 13:36:48,133 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-23 13:36:48,134 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 22 states and 31 transitions. [2021-11-23 13:36:48,134 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-11-23 13:36:48,135 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-11-23 13:36:48,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2021-11-23 13:36:48,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:36:48,135 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-11-23 13:36:48,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2021-11-23 13:36:48,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-11-23 13:36:48,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.4) internal successors, (28), 19 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) [2021-11-23 13:36:48,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2021-11-23 13:36:48,138 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-11-23 13:36:48,138 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-11-23 13:36:48,138 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-23 13:36:48,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 28 transitions. [2021-11-23 13:36:48,139 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-23 13:36:48,139 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:48,140 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:48,140 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-23 13:36:48,140 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:36:48,140 INFO L791 eck$LassoCheckResult]: Stem: 198#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 199#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 194#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 195#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 203#L33 [2021-11-23 13:36:48,141 INFO L793 eck$LassoCheckResult]: Loop: 203#L33 assume main_~x~0#1 < main_~y~0#1;main_~x~0#1 := main_~x~0#1 - 1; 206#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 201#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 209#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 203#L33 [2021-11-23 13:36:48,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:48,141 INFO L85 PathProgramCache]: Analyzing trace with hash 925807, now seen corresponding path program 1 times [2021-11-23 13:36:48,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:48,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061232081] [2021-11-23 13:36:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:48,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:48,146 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:48,150 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:48,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1727281, now seen corresponding path program 1 times [2021-11-23 13:36:48,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:48,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315406366] [2021-11-23 13:36:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:48,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:48,157 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:48,162 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash 304518303, now seen corresponding path program 1 times [2021-11-23 13:36:48,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:48,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922215648] [2021-11-23 13:36:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:48,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:48,170 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:48,177 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:48,216 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:48,216 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:48,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:48,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:48,217 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:36:48,217 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:48,217 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:48,217 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:48,217 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2021-11-23 13:36:48,217 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:48,217 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:48,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:48,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:48,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:48,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:48,349 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:48,349 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:36:48,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:48,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:48,360 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:48,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-23 13:36:48,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:48,374 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:48,405 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:48,405 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:48,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:48,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:48,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:48,448 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:48,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:48,462 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:48,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-23 13:36:48,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:48,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:48,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:48,535 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:48,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-23 13:36:48,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:36:48,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:48,656 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:36:48,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-11-23 13:36:48,659 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:48,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:48,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:48,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:48,659 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:36:48,659 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:48,659 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:48,659 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:48,659 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2021-11-23 13:36:48,659 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:48,659 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:48,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:48,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:48,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:48,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:48,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:48,811 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:48,811 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:36:48,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:48,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:48,813 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:48,815 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 [2021-11-23 13:36:48,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:48,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:48,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:48,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:48,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:48,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:48,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:48,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-23 13:36:48,844 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:36:48,848 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 13:36:48,848 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:36:48,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:48,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:48,849 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:48,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-23 13:36:48,851 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:36:48,856 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:36:48,856 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:36:48,856 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:36:48,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:48,878 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:36:48,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:48,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:48,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:48,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:48,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:48,975 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 13:36:48,975 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 28 transitions. cyclomatic complexity: 11 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:49,011 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 28 transitions. cyclomatic complexity: 11. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 49 transitions. Complement of second has 7 states. [2021-11-23 13:36:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-11-23 13:36:49,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 4 letters. [2021-11-23 13:36:49,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:49,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2021-11-23 13:36:49,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:49,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 8 letters. [2021-11-23 13:36:49,015 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:49,015 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2021-11-23 13:36:49,017 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-23 13:36:49,019 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 39 transitions. [2021-11-23 13:36:49,019 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-11-23 13:36:49,020 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-11-23 13:36:49,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 39 transitions. [2021-11-23 13:36:49,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:36:49,020 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-11-23 13:36:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 39 transitions. [2021-11-23 13:36:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-11-23 13:36:49,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 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) [2021-11-23 13:36:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2021-11-23 13:36:49,025 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-11-23 13:36:49,025 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-11-23 13:36:49,025 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-23 13:36:49,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 36 transitions. [2021-11-23 13:36:49,026 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-23 13:36:49,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:49,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:49,027 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:49,027 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:36:49,027 INFO L791 eck$LassoCheckResult]: Stem: 300#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 301#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 315#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 305#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 306#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 309#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 314#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 316#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 311#L26 [2021-11-23 13:36:49,027 INFO L793 eck$LassoCheckResult]: Loop: 311#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 302#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 303#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 318#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 311#L26 [2021-11-23 13:36:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash 304577876, now seen corresponding path program 1 times [2021-11-23 13:36:49,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:49,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017321149] [2021-11-23 13:36:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:49,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,036 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,042 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:49,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:49,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1450504, now seen corresponding path program 2 times [2021-11-23 13:36:49,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:49,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529496678] [2021-11-23 13:36:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:49,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,049 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,054 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1933001253, now seen corresponding path program 1 times [2021-11-23 13:36:49,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:49,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373314833] [2021-11-23 13:36:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:49,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,064 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,074 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:49,118 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:49,118 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:49,118 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:49,119 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:49,119 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:36:49,119 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:49,119 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:49,119 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:49,119 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2021-11-23 13:36:49,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:49,119 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:49,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,200 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:49,200 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:36:49,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:49,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:49,207 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:49,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:49,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:49,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-23 13:36:49,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:49,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:49,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:49,276 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:49,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:36:49,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:49,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-23 13:36:49,450 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:36:49,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:49,453 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:49,453 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:49,453 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:49,453 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:49,453 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:36:49,453 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:49,454 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:49,454 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:49,454 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2021-11-23 13:36:49,454 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:49,454 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:49,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,544 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:49,544 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:36:49,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:49,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:49,546 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:49,558 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 [2021-11-23 13:36:49,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:49,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:49,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:49,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:49,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:49,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:49,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:49,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-23 13:36:49,584 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:36:49,598 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:36:49,598 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:36:49,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:49,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:49,600 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:49,602 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:36:49,602 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:36:49,602 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:36:49,602 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-11-23 13:36:49,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-23 13:36:49,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:49,643 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:36:49,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:49,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:49,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:49,698 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:36:49,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:49,738 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 13:36:49,738 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 36 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:49,782 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 36 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 79 states and 117 transitions. Complement of second has 7 states. [2021-11-23 13:36:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-11-23 13:36:49,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 4 letters. [2021-11-23 13:36:49,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:49,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 12 letters. Loop has 4 letters. [2021-11-23 13:36:49,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:49,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 8 letters. [2021-11-23 13:36:49,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:49,790 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 117 transitions. [2021-11-23 13:36:49,793 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-23 13:36:49,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 56 states and 81 transitions. [2021-11-23 13:36:49,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-11-23 13:36:49,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-11-23 13:36:49,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2021-11-23 13:36:49,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:36:49,800 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 81 transitions. [2021-11-23 13:36:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2021-11-23 13:36:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2021-11-23 13:36:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 42 states have internal predecessors, (64), 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) [2021-11-23 13:36:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 64 transitions. [2021-11-23 13:36:49,810 INFO L704 BuchiCegarLoop]: Abstraction has 43 states and 64 transitions. [2021-11-23 13:36:49,810 INFO L587 BuchiCegarLoop]: Abstraction has 43 states and 64 transitions. [2021-11-23 13:36:49,810 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-23 13:36:49,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 64 transitions. [2021-11-23 13:36:49,811 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-23 13:36:49,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:49,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:49,812 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:49,813 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:36:49,813 INFO L791 eck$LassoCheckResult]: Stem: 465#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 466#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 484#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 490#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 491#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 482#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 483#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 494#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 495#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 467#L26-2 [2021-11-23 13:36:49,813 INFO L793 eck$LassoCheckResult]: Loop: 467#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 468#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 470#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 472#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 467#L26-2 [2021-11-23 13:36:49,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:49,814 INFO L85 PathProgramCache]: Analyzing trace with hash 851979583, now seen corresponding path program 1 times [2021-11-23 13:36:49,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:49,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192670689] [2021-11-23 13:36:49,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:49,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,824 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,830 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:49,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:49,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1560156, now seen corresponding path program 2 times [2021-11-23 13:36:49,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:49,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511797494] [2021-11-23 13:36:49,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:49,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,836 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,840 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:49,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:49,841 INFO L85 PathProgramCache]: Analyzing trace with hash 208350362, now seen corresponding path program 1 times [2021-11-23 13:36:49,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:49,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212496335] [2021-11-23 13:36:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:49,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,848 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:49,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:49,899 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:49,899 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:49,900 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:49,900 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:49,900 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:36:49,900 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:49,900 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:49,900 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:49,900 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2021-11-23 13:36:49,900 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:49,901 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:49,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:49,967 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:49,967 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:36:49,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:49,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:49,968 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:49,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:49,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:49,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-23 13:36:50,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:50,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:50,036 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:50,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:36:50,040 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:50,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-23 13:36:50,084 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:36:50,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:50,089 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:50,089 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:50,089 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:50,089 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:50,089 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:36:50,089 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,089 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:50,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:50,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2021-11-23 13:36:50,090 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:50,090 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:50,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:50,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:50,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:50,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:50,156 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:50,156 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:36:50,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:50,158 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:50,160 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 [2021-11-23 13:36:50,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:50,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:50,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:50,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:50,171 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:36:50,171 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:36:50,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-23 13:36:50,188 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:50,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-11-23 13:36:50,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:50,209 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:50,210 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 [2021-11-23 13:36:50,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:50,219 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:50,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:50,220 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:50,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:50,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-23 13:36:50,257 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:50,257 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:50,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:50,280 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:36:50,285 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:36:50,285 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:36:50,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:50,289 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:50,292 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:36:50,293 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:36:50,293 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:36:50,293 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-11-23 13:36:50,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:50,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-23 13:36:50,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-11-23 13:36:50,314 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:36:50,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:50,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:50,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:50,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:50,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:50,390 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 [2021-11-23 13:36:50,390 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 64 transitions. cyclomatic complexity: 28 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:50,412 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 64 transitions. cyclomatic complexity: 28. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 107 states and 159 transitions. Complement of second has 7 states. [2021-11-23 13:36:50,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-11-23 13:36:50,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 4 letters. [2021-11-23 13:36:50,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:50,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 13 letters. Loop has 4 letters. [2021-11-23 13:36:50,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:50,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 8 letters. [2021-11-23 13:36:50,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:50,418 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 159 transitions. [2021-11-23 13:36:50,421 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-11-23 13:36:50,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 91 states and 130 transitions. [2021-11-23 13:36:50,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-11-23 13:36:50,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-11-23 13:36:50,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 130 transitions. [2021-11-23 13:36:50,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:36:50,423 INFO L681 BuchiCegarLoop]: Abstraction has 91 states and 130 transitions. [2021-11-23 13:36:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 130 transitions. [2021-11-23 13:36:50,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-11-23 13:36:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 75 states have internal predecessors, (112), 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) [2021-11-23 13:36:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 112 transitions. [2021-11-23 13:36:50,430 INFO L704 BuchiCegarLoop]: Abstraction has 76 states and 112 transitions. [2021-11-23 13:36:50,430 INFO L587 BuchiCegarLoop]: Abstraction has 76 states and 112 transitions. [2021-11-23 13:36:50,430 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-23 13:36:50,430 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76 states and 112 transitions. [2021-11-23 13:36:50,431 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-11-23 13:36:50,432 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:50,432 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:50,432 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:50,432 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:36:50,432 INFO L791 eck$LassoCheckResult]: Stem: 678#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 679#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 697#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 713#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 725#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 723#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 722#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 719#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 720#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 749#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 748#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 736#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 737#L26 [2021-11-23 13:36:50,433 INFO L793 eck$LassoCheckResult]: Loop: 737#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 680#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 681#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 738#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 737#L26 [2021-11-23 13:36:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:50,433 INFO L85 PathProgramCache]: Analyzing trace with hash 69192027, now seen corresponding path program 2 times [2021-11-23 13:36:50,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:50,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897441660] [2021-11-23 13:36:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:50,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:50,439 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:50,445 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1450504, now seen corresponding path program 3 times [2021-11-23 13:36:50,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:50,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132557233] [2021-11-23 13:36:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:50,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:50,450 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:50,453 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:50,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:50,459 INFO L85 PathProgramCache]: Analyzing trace with hash -232935838, now seen corresponding path program 3 times [2021-11-23 13:36:50,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:50,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203182979] [2021-11-23 13:36:50,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:50,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:50,474 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:50,486 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:50,526 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:50,526 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:50,526 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:50,526 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:50,526 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:36:50,526 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,527 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:50,527 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:50,527 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2021-11-23 13:36:50,527 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:50,527 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:50,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:50,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:50,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:50,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:50,593 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:50,593 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:36:50,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:50,596 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:50,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:50,605 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:50,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-23 13:36:50,636 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:50,636 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:50,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-11-23 13:36:50,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:50,662 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:50,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-23 13:36:50,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:50,663 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:50,679 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:50,679 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:50,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-11-23 13:36:50,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:50,706 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:50,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-23 13:36:50,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:50,707 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:50,729 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:50,729 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:50,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:50,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:50,764 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:50,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:50,769 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:50,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-23 13:36:50,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:50,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:50,835 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:50,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-23 13:36:50,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:36:50,844 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:50,995 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:36:50,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-11-23 13:36:50,998 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:50,998 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:50,998 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:50,998 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:50,998 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:36:50,998 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:50,998 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:50,998 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:50,998 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2021-11-23 13:36:50,998 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:50,998 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:50,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:51,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:51,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:51,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:51,087 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:51,087 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:36:51,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:51,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:51,088 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:51,096 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 [2021-11-23 13:36:51,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-23 13:36:51,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:51,104 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:51,104 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:51,104 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-23 13:36:51,104 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:51,105 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-23 13:36:51,105 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:51,120 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:51,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-11-23 13:36:51,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:51,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:51,150 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:51,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-23 13:36:51,154 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 [2021-11-23 13:36:51,160 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:51,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:51,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:51,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:51,162 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:36:51,163 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:36:51,177 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:51,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:51,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:51,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:51,211 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:51,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-23 13:36:51,213 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 [2021-11-23 13:36:51,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:51,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:51,220 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:51,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:51,221 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:36:51,221 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:36:51,229 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:51,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:51,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:51,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:51,250 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:51,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-23 13:36:51,252 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 [2021-11-23 13:36:51,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:51,260 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:51,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:51,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:51,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:51,263 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:51,263 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:51,286 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:36:51,293 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:36:51,293 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:36:51,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:51,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:51,294 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:51,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-23 13:36:51,295 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:36:51,295 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:36:51,296 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:36:51,296 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-11-23 13:36:51,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:51,316 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:36:51,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:51,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:51,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:51,384 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:36:51,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:51,424 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 13:36:51,424 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:51,454 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 151 states and 218 transitions. Complement of second has 7 states. [2021-11-23 13:36:51,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-11-23 13:36:51,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 12 letters. Loop has 4 letters. [2021-11-23 13:36:51,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:51,457 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:36:51,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:51,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:51,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:51,494 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:36:51,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:51,525 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 13:36:51,525 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:51,577 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 161 states and 228 transitions. Complement of second has 9 states. [2021-11-23 13:36:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2021-11-23 13:36:51,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 12 letters. Loop has 4 letters. [2021-11-23 13:36:51,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:51,581 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:36:51,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:51,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:51,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:51,626 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:36:51,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:51,657 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 13:36:51,658 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:51,691 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 184 states and 274 transitions. Complement of second has 9 states. [2021-11-23 13:36:51,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2021-11-23 13:36:51,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 12 letters. Loop has 4 letters. [2021-11-23 13:36:51,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:51,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 16 letters. Loop has 4 letters. [2021-11-23 13:36:51,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:51,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 12 letters. Loop has 8 letters. [2021-11-23 13:36:51,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:51,700 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 274 transitions. [2021-11-23 13:36:51,707 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-11-23 13:36:51,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 121 states and 176 transitions. [2021-11-23 13:36:51,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-11-23 13:36:51,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-11-23 13:36:51,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 176 transitions. [2021-11-23 13:36:51,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:36:51,714 INFO L681 BuchiCegarLoop]: Abstraction has 121 states and 176 transitions. [2021-11-23 13:36:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 176 transitions. [2021-11-23 13:36:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 74. [2021-11-23 13:36:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 74 states have (on average 1.472972972972973) internal successors, (109), 73 states have internal predecessors, (109), 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) [2021-11-23 13:36:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 109 transitions. [2021-11-23 13:36:51,734 INFO L704 BuchiCegarLoop]: Abstraction has 74 states and 109 transitions. [2021-11-23 13:36:51,734 INFO L587 BuchiCegarLoop]: Abstraction has 74 states and 109 transitions. [2021-11-23 13:36:51,734 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-23 13:36:51,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 109 transitions. [2021-11-23 13:36:51,735 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2021-11-23 13:36:51,735 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:51,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:51,736 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:51,736 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:51,736 INFO L791 eck$LassoCheckResult]: Stem: 1444#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1445#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 1463#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1480#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1479#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 1477#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1473#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1470#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 1457#L26 [2021-11-23 13:36:51,736 INFO L793 eck$LassoCheckResult]: Loop: 1457#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 1458#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1478#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1474#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1465#L33 assume main_~x~0#1 < main_~y~0#1;main_~x~0#1 := main_~x~0#1 - 1; 1466#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1472#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1471#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 1457#L26 [2021-11-23 13:36:51,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:51,737 INFO L85 PathProgramCache]: Analyzing trace with hash 304577876, now seen corresponding path program 2 times [2021-11-23 13:36:51,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:51,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96613202] [2021-11-23 13:36:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:51,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:51,755 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:51,759 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:51,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:51,763 INFO L85 PathProgramCache]: Analyzing trace with hash -449776328, now seen corresponding path program 1 times [2021-11-23 13:36:51,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:51,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457478479] [2021-11-23 13:36:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:51,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:51,773 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:51,786 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:51,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1555787659, now seen corresponding path program 1 times [2021-11-23 13:36:51,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:51,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550807731] [2021-11-23 13:36:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:51,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:51,797 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:51,810 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:51,870 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:51,871 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:51,871 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:51,871 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:51,871 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:36:51,871 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:51,871 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:51,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:51,872 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2021-11-23 13:36:51,872 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:51,872 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:51,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:51,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:51,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:51,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:51,939 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:51,939 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:36:51,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:51,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:51,940 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:51,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:51,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:51,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-23 13:36:51,966 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:51,966 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:52,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:52,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:52,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:52,002 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:52,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:52,009 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:52,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-23 13:36:52,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:52,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:52,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:52,075 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:52,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:36:52,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:52,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-23 13:36:52,252 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:36:52,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:52,255 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:52,256 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:52,256 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:52,256 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:52,256 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:36:52,256 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:52,256 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:52,256 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:52,256 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2021-11-23 13:36:52,256 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:52,256 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:52,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:52,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:52,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:52,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:52,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:52,387 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:52,388 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:36:52,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:52,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:52,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:52,396 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:52,398 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 [2021-11-23 13:36:52,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:52,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:52,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:52,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:52,409 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:36:52,409 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:36:52,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-23 13:36:52,420 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:52,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:52,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:52,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:52,453 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:52,461 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 [2021-11-23 13:36:52,470 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:52,470 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:52,470 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:52,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:52,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:52,472 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:52,472 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:52,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-23 13:36:52,484 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:36:52,497 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:36:52,497 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:36:52,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:52,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:52,499 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:52,501 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:36:52,501 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:36:52,501 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:36:52,501 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:36:52,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-23 13:36:52,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:52,533 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:36:52,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:52,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:52,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:52,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:36:52,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:52,621 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-11-23 13:36:52,622 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 109 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:52,686 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 109 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 213 states and 321 transitions. Complement of second has 12 states. [2021-11-23 13:36:52,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2021-11-23 13:36:52,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 8 letters. Loop has 8 letters. [2021-11-23 13:36:52,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:52,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 16 letters. Loop has 8 letters. [2021-11-23 13:36:52,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:52,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 8 letters. Loop has 16 letters. [2021-11-23 13:36:52,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:52,689 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 321 transitions. [2021-11-23 13:36:52,692 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 31 [2021-11-23 13:36:52,694 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 205 states and 312 transitions. [2021-11-23 13:36:52,694 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-11-23 13:36:52,694 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-11-23 13:36:52,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 312 transitions. [2021-11-23 13:36:52,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:36:52,695 INFO L681 BuchiCegarLoop]: Abstraction has 205 states and 312 transitions. [2021-11-23 13:36:52,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 312 transitions. [2021-11-23 13:36:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 165. [2021-11-23 13:36:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 165 states have (on average 1.5575757575757576) internal successors, (257), 164 states have internal predecessors, (257), 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) [2021-11-23 13:36:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 257 transitions. [2021-11-23 13:36:52,704 INFO L704 BuchiCegarLoop]: Abstraction has 165 states and 257 transitions. [2021-11-23 13:36:52,704 INFO L587 BuchiCegarLoop]: Abstraction has 165 states and 257 transitions. [2021-11-23 13:36:52,704 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-23 13:36:52,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 257 transitions. [2021-11-23 13:36:52,706 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 27 [2021-11-23 13:36:52,706 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:52,706 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:52,706 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:52,707 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:52,707 INFO L791 eck$LassoCheckResult]: Stem: 1815#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1816#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 1837#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1890#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 1891#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 1896#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1895#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1893#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1892#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 1889#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1854#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1855#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 1829#L26 [2021-11-23 13:36:52,707 INFO L793 eck$LassoCheckResult]: Loop: 1829#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 1830#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1860#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1857#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1856#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 1851#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1850#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1845#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 1829#L26 [2021-11-23 13:36:52,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:52,707 INFO L85 PathProgramCache]: Analyzing trace with hash 69192027, now seen corresponding path program 4 times [2021-11-23 13:36:52,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:52,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161203080] [2021-11-23 13:36:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:52,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:52,712 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:52,717 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:52,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:52,718 INFO L85 PathProgramCache]: Analyzing trace with hash -449716746, now seen corresponding path program 1 times [2021-11-23 13:36:52,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:52,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632973430] [2021-11-23 13:36:52,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:52,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:52,722 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:52,727 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:52,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:52,727 INFO L85 PathProgramCache]: Analyzing trace with hash 898084176, now seen corresponding path program 5 times [2021-11-23 13:36:52,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:52,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5607303] [2021-11-23 13:36:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:52,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:52,734 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:52,742 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:52,810 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:52,811 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:52,811 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:52,811 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:52,811 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:36:52,811 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:52,811 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:52,811 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:52,811 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2021-11-23 13:36:52,811 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:52,812 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:52,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:52,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:52,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:52,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:52,881 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:52,881 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:36:52,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:52,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:52,883 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:52,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-23 13:36:52,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:52,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:52,908 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:52,908 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:52,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-11-23 13:36:52,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:52,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:52,931 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:52,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-11-23 13:36:52,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:52,932 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:52,940 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:52,940 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:52,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-11-23 13:36:52,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:52,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:52,960 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:52,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-11-23 13:36:52,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:52,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:52,976 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:52,976 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:52,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:52,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:52,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:52,996 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:52,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-11-23 13:36:52,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:52,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:53,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:53,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:53,026 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:53,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-11-23 13:36:53,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:36:53,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:53,132 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:36:53,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-11-23 13:36:53,135 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:53,135 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:53,135 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:53,135 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:53,135 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:36:53,135 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,135 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:53,135 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:53,136 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2021-11-23 13:36:53,136 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:53,136 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:53,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,206 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:53,206 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:36:53,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:53,210 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:53,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-11-23 13:36:53,212 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 [2021-11-23 13:36:53,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:53,219 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:53,219 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:53,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:53,221 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:36:53,221 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:36:53,233 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:53,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:53,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:53,261 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:53,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-11-23 13:36:53,262 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-23 13:36:53,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:53,269 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:53,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:53,269 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:53,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:53,269 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:53,269 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:53,276 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:53,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:53,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:53,296 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:53,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-11-23 13:36:53,298 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 [2021-11-23 13:36:53,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:53,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:53,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:53,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:53,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:53,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:53,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:53,309 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:36:53,311 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 13:36:53,311 INFO L444 ModelExtractionUtils]: 4 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:36:53,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:53,312 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:53,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-11-23 13:36:53,313 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:36:53,313 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:36:53,313 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:36:53,313 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:36:53,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:53,333 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:36:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:53,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:53,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:53,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:36:53,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:53,434 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-11-23 13:36:53,434 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 257 transitions. cyclomatic complexity: 110 Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:53,520 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 257 transitions. cyclomatic complexity: 110. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 400 states and 623 transitions. Complement of second has 12 states. [2021-11-23 13:36:53,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:53,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2021-11-23 13:36:53,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 12 letters. Loop has 8 letters. [2021-11-23 13:36:53,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:53,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 20 letters. Loop has 8 letters. [2021-11-23 13:36:53,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:53,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 12 letters. Loop has 16 letters. [2021-11-23 13:36:53,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:53,525 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 400 states and 623 transitions. [2021-11-23 13:36:53,529 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2021-11-23 13:36:53,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 400 states to 238 states and 369 transitions. [2021-11-23 13:36:53,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-11-23 13:36:53,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-11-23 13:36:53,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 238 states and 369 transitions. [2021-11-23 13:36:53,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:36:53,532 INFO L681 BuchiCegarLoop]: Abstraction has 238 states and 369 transitions. [2021-11-23 13:36:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states and 369 transitions. [2021-11-23 13:36:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 189. [2021-11-23 13:36:53,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 189 states have (on average 1.5714285714285714) internal successors, (297), 188 states have internal predecessors, (297), 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) [2021-11-23 13:36:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 297 transitions. [2021-11-23 13:36:53,557 INFO L704 BuchiCegarLoop]: Abstraction has 189 states and 297 transitions. [2021-11-23 13:36:53,557 INFO L587 BuchiCegarLoop]: Abstraction has 189 states and 297 transitions. [2021-11-23 13:36:53,557 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-23 13:36:53,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 297 transitions. [2021-11-23 13:36:53,559 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2021-11-23 13:36:53,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:53,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:53,560 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:53,561 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:36:53,561 INFO L791 eck$LassoCheckResult]: Stem: 2476#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2477#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2502#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 2519#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 2520#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 2597#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 2553#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 2550#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 2537#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 2538#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 2636#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 2514#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 2504#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 2478#L26-2 [2021-11-23 13:36:53,561 INFO L793 eck$LassoCheckResult]: Loop: 2478#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 2479#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 2511#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 2503#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 2478#L26-2 [2021-11-23 13:36:53,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:53,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1469956070, now seen corresponding path program 2 times [2021-11-23 13:36:53,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:53,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590236005] [2021-11-23 13:36:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:53,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:53,578 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:53,590 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:53,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1560156, now seen corresponding path program 3 times [2021-11-23 13:36:53,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:53,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088396188] [2021-11-23 13:36:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:53,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:53,594 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:53,597 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:53,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash 783964661, now seen corresponding path program 3 times [2021-11-23 13:36:53,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:53,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109218194] [2021-11-23 13:36:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:53,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:53,603 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:53,609 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:53,643 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:53,643 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:53,643 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:53,643 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:53,643 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:36:53,643 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,644 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:53,644 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:53,644 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2021-11-23 13:36:53,644 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:53,644 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:53,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,703 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:53,704 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:36:53,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:53,705 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:53,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-11-23 13:36:53,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:53,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:53,736 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:53,736 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:53,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:53,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:53,770 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:53,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-11-23 13:36:53,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:53,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:53,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-11-23 13:36:53,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:53,804 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:53,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-11-23 13:36:53,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:36:53,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:53,843 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:36:53,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2021-11-23 13:36:53,845 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:53,845 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:53,845 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:53,845 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:53,845 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:36:53,845 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,845 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:53,845 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:53,845 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2021-11-23 13:36:53,845 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:53,845 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:53,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:53,930 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:53,931 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:36:53,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:53,932 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:53,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:53,961 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 [2021-11-23 13:36:53,970 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:53,970 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:53,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:53,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:53,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:53,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:53,971 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:53,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-11-23 13:36:53,982 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:36:53,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:53,985 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 13:36:53,985 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:36:53,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:53,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:53,986 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:53,988 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:36:53,988 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:36:53,988 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:36:53,988 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-11-23 13:36:54,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-11-23 13:36:54,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2021-11-23 13:36:54,013 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:36:54,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:54,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:54,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:54,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:54,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:54,098 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 [2021-11-23 13:36:54,098 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:54,128 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 274 states and 402 transitions. Complement of second has 7 states. [2021-11-23 13:36:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:54,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:54,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-11-23 13:36:54,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 13 letters. Loop has 4 letters. [2021-11-23 13:36:54,141 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:54,141 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:36:54,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:54,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:54,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:54,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:54,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:54,217 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-23 13:36:54,217 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:54,234 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 278 states and 406 transitions. Complement of second has 7 states. [2021-11-23 13:36:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-23 13:36:54,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 4 letters. [2021-11-23 13:36:54,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:54,236 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:36:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:54,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:54,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:54,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:54,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:54,293 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-23 13:36:54,294 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:54,307 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 315 states and 462 transitions. Complement of second has 6 states. [2021-11-23 13:36:54,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-23 13:36:54,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 4 letters. [2021-11-23 13:36:54,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:54,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 17 letters. Loop has 4 letters. [2021-11-23 13:36:54,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:54,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 8 letters. [2021-11-23 13:36:54,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:54,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315 states and 462 transitions. [2021-11-23 13:36:54,314 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-11-23 13:36:54,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315 states to 209 states and 311 transitions. [2021-11-23 13:36:54,318 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-11-23 13:36:54,318 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-11-23 13:36:54,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 209 states and 311 transitions. [2021-11-23 13:36:54,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:36:54,319 INFO L681 BuchiCegarLoop]: Abstraction has 209 states and 311 transitions. [2021-11-23 13:36:54,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states and 311 transitions. [2021-11-23 13:36:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 120. [2021-11-23 13:36:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 120 states have (on average 1.5333333333333334) internal successors, (184), 119 states have internal predecessors, (184), 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) [2021-11-23 13:36:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 184 transitions. [2021-11-23 13:36:54,324 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 184 transitions. [2021-11-23 13:36:54,324 INFO L587 BuchiCegarLoop]: Abstraction has 120 states and 184 transitions. [2021-11-23 13:36:54,324 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-23 13:36:54,324 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 184 transitions. [2021-11-23 13:36:54,325 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-23 13:36:54,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:54,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:54,326 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2021-11-23 13:36:54,326 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:36:54,327 INFO L791 eck$LassoCheckResult]: Stem: 3726#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3727#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 3746#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 3752#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 3751#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 3750#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 3749#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 3747#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 3736#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 3737#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 3775#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 3836#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 3768#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 3760#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 3761#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 3755#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 3730#L33 [2021-11-23 13:36:54,327 INFO L793 eck$LassoCheckResult]: Loop: 3730#L33 assume main_~x~0#1 < main_~y~0#1;main_~x~0#1 := main_~x~0#1 - 1; 3733#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 3744#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 3729#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 3730#L33 [2021-11-23 13:36:54,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1555847250, now seen corresponding path program 6 times [2021-11-23 13:36:54,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:54,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630941016] [2021-11-23 13:36:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:54,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:54,339 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:54,346 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:54,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1727281, now seen corresponding path program 2 times [2021-11-23 13:36:54,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:54,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014490787] [2021-11-23 13:36:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:54,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:54,356 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:54,369 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:54,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2069897986, now seen corresponding path program 2 times [2021-11-23 13:36:54,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:54,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766695219] [2021-11-23 13:36:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:54,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:54,378 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:54,393 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:54,425 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:54,425 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:54,425 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:54,425 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:54,425 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:36:54,426 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:54,426 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:54,426 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:54,426 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2021-11-23 13:36:54,426 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:54,426 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:54,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:54,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:54,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:54,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:54,493 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:54,493 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:36:54,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:54,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:54,496 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:54,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:54,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:54,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-11-23 13:36:54,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2021-11-23 13:36:54,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:54,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:54,555 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:54,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-11-23 13:36:54,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:36:54,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:54,657 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:36:54,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2021-11-23 13:36:54,659 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:54,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:54,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:54,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:54,659 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:36:54,659 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:54,659 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:54,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:54,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2021-11-23 13:36:54,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:54,660 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:54,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:54,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:54,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:54,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:54,723 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:54,723 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:36:54,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:54,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:54,724 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:54,736 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 [2021-11-23 13:36:54,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:54,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:54,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:54,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:54,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:54,747 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:54,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:54,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-11-23 13:36:54,756 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:36:54,759 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:36:54,759 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:36:54,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:54,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:54,760 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:54,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-11-23 13:36:54,761 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:36:54,761 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:36:54,761 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:36:54,762 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:36:54,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:54,781 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:36:54,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:54,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:54,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:54,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:54,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:54,890 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 13:36:54,890 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:54,914 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 163 states and 248 transitions. Complement of second has 7 states. [2021-11-23 13:36:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-11-23 13:36:54,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 16 letters. Loop has 4 letters. [2021-11-23 13:36:54,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:54,915 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:36:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:54,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:54,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:54,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:54,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:54,992 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 13:36:54,992 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:55,024 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 163 states and 246 transitions. Complement of second has 7 states. [2021-11-23 13:36:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-11-23 13:36:55,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-11-23 13:36:55,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:55,026 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:36:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:55,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:55,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:55,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:55,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:55,107 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-23 13:36:55,107 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:55,131 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 162 states and 251 transitions. Complement of second has 8 states. [2021-11-23 13:36:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:36:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-23 13:36:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-11-23 13:36:55,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 16 letters. Loop has 4 letters. [2021-11-23 13:36:55,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:55,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 20 letters. Loop has 4 letters. [2021-11-23 13:36:55,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:55,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 16 letters. Loop has 8 letters. [2021-11-23 13:36:55,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:55,133 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 162 states and 251 transitions. [2021-11-23 13:36:55,135 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:36:55,135 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 162 states to 0 states and 0 transitions. [2021-11-23 13:36:55,135 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-23 13:36:55,135 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-23 13:36:55,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-23 13:36:55,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:36:55,135 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:36:55,135 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:36:55,135 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:36:55,135 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-11-23 13:36:55,136 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:36:55,136 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:36:55,136 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-23 13:36:55,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 01:36:55 BoogieIcfgContainer [2021-11-23 13:36:55,143 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-23 13:36:55,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:36:55,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:36:55,144 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:36:55,144 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:36:44" (3/4) ... [2021-11-23 13:36:55,147 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:36:55,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:36:55,148 INFO L158 Benchmark]: Toolchain (without parser) took 11012.78ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 45.0MB in the beginning and 48.2MB in the end (delta: -3.2MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. [2021-11-23 13:36:55,148 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 81.8MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:55,149 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.21ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 44.8MB in the beginning and 96.1MB in the end (delta: -51.3MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2021-11-23 13:36:55,149 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.14ms. Allocated memory is still 119.5MB. Free memory was 96.1MB in the beginning and 94.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:55,149 INFO L158 Benchmark]: Boogie Preprocessor took 22.99ms. Allocated memory is still 119.5MB. Free memory was 94.8MB in the beginning and 93.8MB in the end (delta: 928.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:55,150 INFO L158 Benchmark]: RCFGBuilder took 286.82ms. Allocated memory is still 119.5MB. Free memory was 93.6MB in the beginning and 85.3MB in the end (delta: 8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 13:36:55,150 INFO L158 Benchmark]: BuchiAutomizer took 10370.41ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 85.3MB in the beginning and 49.3MB in the end (delta: 36.0MB). Peak memory consumption was 62.0MB. Max. memory is 16.1GB. [2021-11-23 13:36:55,150 INFO L158 Benchmark]: Witness Printer took 3.85ms. Allocated memory is still 144.7MB. Free memory was 49.3MB in the beginning and 48.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:36:55,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 81.8MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.21ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 44.8MB in the beginning and 96.1MB in the end (delta: -51.3MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.14ms. Allocated memory is still 119.5MB. Free memory was 96.1MB in the beginning and 94.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.99ms. Allocated memory is still 119.5MB. Free memory was 94.8MB in the beginning and 93.8MB in the end (delta: 928.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 286.82ms. Allocated memory is still 119.5MB. Free memory was 93.6MB in the beginning and 85.3MB in the end (delta: 8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 10370.41ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 85.3MB in the beginning and 49.3MB in the end (delta: 36.0MB). Peak memory consumption was 62.0MB. Max. memory is 16.1GB. * Witness Printer took 3.85ms. Allocated memory is still 144.7MB. Free memory was 49.3MB in the beginning and 48.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (0 trivial, 7 deterministic, 3 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 7 locations. One deterministic module has affine ranking function x and consists of 7 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.2s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 7.8s. Construction of modules took 0.2s. Büchi inclusion checks took 1.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 261 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 189 states and ocurred in iteration 8. Nontrivial modules had stage [7, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/4 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 276 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 260 mSDsluCounter, 303 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 257 IncrementalHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 209 mSDtfsCounter, 257 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT10 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax153 hnf99 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf93 smp100 dnf100 smp100 tf107 neg100 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-23 13:36:55,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:55,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2021-11-23 13:36:55,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3af46b-21be-4fbd-9f47-ca91631508ae/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE