./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer --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 2291f924dd9adb1923bbd2b3119647838e71c665 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:31:28,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:31:28,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:31:28,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:31:28,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:31:28,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:31:28,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:31:28,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:31:28,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:31:28,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:31:28,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:31:28,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:31:28,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:31:28,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:31:28,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:31:28,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:31:28,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:31:28,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:31:28,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:31:28,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:31:28,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:31:28,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:31:28,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:31:28,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:31:28,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:31:28,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:31:28,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:31:28,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:31:28,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:31:28,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:31:28,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:31:28,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:31:28,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:31:28,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:31:28,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:31:28,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:31:28,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:31:28,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:31:28,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:31:28,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:31:28,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:31:28,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 20:31:28,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:31:28,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:31:28,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:31:28,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:31:28,891 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:31:28,891 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:31:28,891 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:31:28,892 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:31:28,892 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:31:28,892 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:31:28,894 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:31:28,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:31:28,894 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:31:28,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:31:28,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:31:28,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:31:28,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:31:28,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:31:28,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:31:28,896 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:31:28,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:31:28,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:31:28,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:31:28,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:31:28,898 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:31:28,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:31:28,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:31:28,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:31:28,899 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:31:28,900 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:31:28,901 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-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2291f924dd9adb1923bbd2b3119647838e71c665 [2020-11-29 20:31:29,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:31:29,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:31:29,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:31:29,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:31:29,239 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:31:29,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2020-11-29 20:31:29,345 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/data/b7675f7c0/96ce6044b88346aea9ceb8517d5045bc/FLAGbb2e3a870 [2020-11-29 20:31:29,999 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:31:30,000 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2020-11-29 20:31:30,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/data/b7675f7c0/96ce6044b88346aea9ceb8517d5045bc/FLAGbb2e3a870 [2020-11-29 20:31:30,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/data/b7675f7c0/96ce6044b88346aea9ceb8517d5045bc [2020-11-29 20:31:30,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:31:30,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:31:30,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:31:30,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:31:30,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:31:30,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:31:30" (1/1) ... [2020-11-29 20:31:30,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@234477ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30, skipping insertion in model container [2020-11-29 20:31:30,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:31:30" (1/1) ... [2020-11-29 20:31:30,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:31:30,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:31:30,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:31:30,597 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:31:30,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:31:30,663 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:31:30,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30 WrapperNode [2020-11-29 20:31:30,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:31:30,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:31:30,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:31:30,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:31:30,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30" (1/1) ... [2020-11-29 20:31:30,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30" (1/1) ... [2020-11-29 20:31:30,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:31:30,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:31:30,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:31:30,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:31:30,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30" (1/1) ... [2020-11-29 20:31:30,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30" (1/1) ... [2020-11-29 20:31:30,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30" (1/1) ... [2020-11-29 20:31:30,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30" (1/1) ... [2020-11-29 20:31:30,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30" (1/1) ... [2020-11-29 20:31:30,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30" (1/1) ... [2020-11-29 20:31:30,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30" (1/1) ... [2020-11-29 20:31:30,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:31:30,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:31:30,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:31:30,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:31:30,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:30,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:31:30,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:31:31,030 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:31:31,031 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 20:31:31,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:31:31 BoogieIcfgContainer [2020-11-29 20:31:31,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:31:31,035 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:31:31,036 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:31:31,040 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:31:31,041 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:31:31,041 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:31:30" (1/3) ... [2020-11-29 20:31:31,043 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6704fec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:31:31, skipping insertion in model container [2020-11-29 20:31:31,043 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:31:31,043 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:30" (2/3) ... [2020-11-29 20:31:31,044 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6704fec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:31:31, skipping insertion in model container [2020-11-29 20:31:31,044 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:31:31,044 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:31:31" (3/3) ... [2020-11-29 20:31:31,047 INFO L373 chiAutomizerObserver]: Analyzing ICFG Pure2Phase-1.c [2020-11-29 20:31:31,141 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:31:31,142 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:31:31,142 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:31:31,142 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:31:31,142 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:31:31,142 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:31:31,142 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:31:31,143 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:31:31,158 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-11-29 20:31:31,181 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:31:31,181 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:31:31,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:31:31,188 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 20:31:31,188 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:31:31,188 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:31:31,188 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-11-29 20:31:31,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:31:31,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:31:31,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:31:31,191 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 20:31:31,191 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:31:31,199 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L20true assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 3#L21true assume !!(main_~z~0 <= 1073741823); 7#L24-2true [2020-11-29 20:31:31,200 INFO L796 eck$LassoCheckResult]: Loop: 7#L24-2true assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 9#L24true assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 7#L24-2true [2020-11-29 20:31:31,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:31,208 INFO L82 PathProgramCache]: Analyzing trace with hash 30949, now seen corresponding path program 1 times [2020-11-29 20:31:31,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:31,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682140618] [2020-11-29 20:31:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:31,327 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:31,341 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:31,364 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:31,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:31,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 1 times [2020-11-29 20:31:31,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:31,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860776908] [2020-11-29 20:31:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:31,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:31,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:31,406 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:31,426 INFO L82 PathProgramCache]: Analyzing trace with hash 29742639, now seen corresponding path program 1 times [2020-11-29 20:31:31,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:31,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155570941] [2020-11-29 20:31:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:31,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:31,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:31,459 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:31,614 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-11-29 20:31:31,677 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:31:31,678 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:31:31,678 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:31:31,679 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:31:31,679 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:31:31,679 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:31,679 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:31:31,679 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:31:31,680 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2020-11-29 20:31:31,680 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:31:31,680 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:31:31,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:31,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:31,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:31,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:31,864 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:31:31,865 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:31,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:31:31,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:31:31,890 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:31:31,890 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:31,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:31:31,937 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:31,943 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:31:31,943 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:31,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:31:31,991 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:32,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:31:32,041 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:32,111 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:31:32,113 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:31:32,113 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:31:32,113 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:31:32,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:31:32,114 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:31:32,114 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:32,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:31:32,114 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:31:32,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2020-11-29 20:31:32,115 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:31:32,115 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:31:32,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:32,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:32,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:32,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:32,293 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:31:32,298 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:32,310 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:31:32,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:31:32,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:31:32,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:31:32,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:31:32,324 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:31:32,324 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:32,341 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:32,393 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:31:32,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:31:32,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:31:32,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:31:32,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:31:32,405 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:31:32,405 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:32,415 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:32,463 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:31:32,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:31:32,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:31:32,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:31:32,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:31:32,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:31:32,470 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:31:32,470 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:32,474 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:31:32,480 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:31:32,481 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:32,491 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:31:32,491 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:31:32,491 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:31:32,492 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:32,537 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:31:32,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:32,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:31:32,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:32,615 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:31:32,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:32,652 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 [2020-11-29 20:31:32,653 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2020-11-29 20:31:32,727 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 8 states. [2020-11-29 20:31:32,731 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 [2020-11-29 20:31:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:31:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2020-11-29 20:31:32,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 20:31:32,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:32,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 20:31:32,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:32,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-29 20:31:32,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:32,740 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 38 transitions. [2020-11-29 20:31:32,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:31:32,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 10 states and 13 transitions. [2020-11-29 20:31:32,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-29 20:31:32,756 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-29 20:31:32,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2020-11-29 20:31:32,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:31:32,757 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-29 20:31:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2020-11-29 20:31:32,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 20:31:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 20:31:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-11-29 20:31:32,787 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-29 20:31:32,787 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-29 20:31:32,787 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:31:32,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-11-29 20:31:32,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:31:32,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:31:32,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:31:32,790 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 20:31:32,790 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 20:31:32,790 INFO L794 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 85#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 82#L21 assume !!(main_~z~0 <= 1073741823); 83#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 91#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2020-11-29 20:31:32,790 INFO L796 eck$LassoCheckResult]: Loop: 86#L27 assume !!(main_~z~0 <= 1073741823); 87#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 88#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2020-11-29 20:31:32,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:32,791 INFO L82 PathProgramCache]: Analyzing trace with hash 29742632, now seen corresponding path program 1 times [2020-11-29 20:31:32,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:32,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153774114] [2020-11-29 20:31:32,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:32,815 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:32,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:32,824 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:32,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:32,828 INFO L82 PathProgramCache]: Analyzing trace with hash 57342, now seen corresponding path program 1 times [2020-11-29 20:31:32,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:32,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438470000] [2020-11-29 20:31:32,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:32,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:32,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:32,839 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:32,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514487, now seen corresponding path program 1 times [2020-11-29 20:31:32,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:32,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733976751] [2020-11-29 20:31:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:32,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:32,857 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:32,859 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:32,935 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:31:32,936 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:31:32,936 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:31:32,936 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:31:32,936 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:31:32,936 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:32,936 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:31:32,937 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:31:32,937 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2020-11-29 20:31:32,937 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:31:32,937 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:31:32,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:32,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:32,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:32,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:33,111 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:31:33,111 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:33,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:31:33,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:31:33,121 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:31:33,121 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:33,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:31:33,150 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:31:33,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:31:33,153 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:33,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:31:33,182 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:31:33,191 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:31:33,192 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=530309120, ULTIMATE.start_main_~z~0=530309120} Honda state: {ULTIMATE.start_main_#t~nondet2=530309120, ULTIMATE.start_main_~z~0=530309120} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:33,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:31:33,218 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:33,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:31:33,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:31:33,316 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:31:33,318 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:31:33,318 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:31:33,318 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:31:33,318 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:31:33,319 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:31:33,319 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:33,319 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:31:33,319 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:31:33,319 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2020-11-29 20:31:33,319 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:31:33,319 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:31:33,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:33,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:33,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:33,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:33,636 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:31:33,637 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:33,651 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:31:33,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:31:33,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:31:33,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:31:33,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:31:33,657 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:31:33,657 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:31:33,671 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:33,716 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:31:33,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:31:33,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:31:33,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:31:33,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:31:33,723 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:31:33,723 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:33,729 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:33,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:31:33,779 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:31:33,779 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:31:33,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:31:33,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:31:33,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:31:33,782 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:31:33,782 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:33,787 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:33,820 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:31:33,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:31:33,821 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:31:33,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:31:33,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:31:33,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:31:33,823 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:31:33,823 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:31:33,825 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:31:33,846 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:31:33,846 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:33,870 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:31:33,870 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:31:33,870 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:31:33,870 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:33,896 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:31:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:33,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:31:33,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:33,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:31:33,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:34,015 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 [2020-11-29 20:31:34,015 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-11-29 20:31:34,075 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 15 states and 20 transitions. Complement of second has 6 states. [2020-11-29 20:31:34,076 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 [2020-11-29 20:31:34,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:31:34,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-29 20:31:34,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 20:31:34,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:34,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-29 20:31:34,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:34,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 6 letters. [2020-11-29 20:31:34,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:34,079 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2020-11-29 20:31:34,080 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:31:34,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 20 transitions. [2020-11-29 20:31:34,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 20:31:34,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-29 20:31:34,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2020-11-29 20:31:34,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:31:34,081 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-11-29 20:31:34,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2020-11-29 20:31:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-11-29 20:31:34,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 20:31:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2020-11-29 20:31:34,089 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-11-29 20:31:34,089 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-11-29 20:31:34,089 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:31:34,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2020-11-29 20:31:34,090 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:31:34,091 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:31:34,092 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:31:34,092 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:31:34,092 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:31:34,093 INFO L794 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 157#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 154#L21 assume !!(main_~z~0 <= 1073741823); 155#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 163#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 158#L27 assume !!(main_~z~0 <= 1073741823); 160#L24-2 [2020-11-29 20:31:34,093 INFO L796 eck$LassoCheckResult]: Loop: 160#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 165#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 160#L24-2 [2020-11-29 20:31:34,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:34,096 INFO L82 PathProgramCache]: Analyzing trace with hash 922021620, now seen corresponding path program 2 times [2020-11-29 20:31:34,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:34,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222062337] [2020-11-29 20:31:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,128 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:34,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:34,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 2 times [2020-11-29 20:31:34,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:34,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196605078] [2020-11-29 20:31:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,146 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,154 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,156 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:34,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514494, now seen corresponding path program 1 times [2020-11-29 20:31:34,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:34,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866162384] [2020-11-29 20:31:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,189 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:34,218 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:31:34,218 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:31:34,218 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:31:34,218 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:31:34,218 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:31:34,218 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:34,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:31:34,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:31:34,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2020-11-29 20:31:34,222 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:31:34,222 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:31:34,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:34,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:34,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:34,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:34,399 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:31:34,400 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:34,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:31:34,414 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:34,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:31:34,472 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:34,516 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:31:34,518 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:31:34,519 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:31:34,519 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:31:34,519 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:31:34,519 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:31:34,519 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:34,519 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:31:34,520 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:31:34,520 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2020-11-29 20:31:34,520 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:31:34,520 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:31:34,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:34,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:34,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:34,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:34,630 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:31:34,630 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:34,643 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:31:34,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:31:34,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:31:34,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:31:34,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:31:34,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:31:34,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:31:34,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:34,660 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:31:34,668 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:31:34,668 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:34,671 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:31:34,671 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:31:34,672 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:31:34,672 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:34,712 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:31:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:34,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:31:34,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:34,772 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:31:34,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:34,791 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 [2020-11-29 20:31:34,791 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-29 20:31:34,809 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 20 states and 27 transitions. Complement of second has 5 states. [2020-11-29 20:31:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:31:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:31:34,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-29 20:31:34,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-29 20:31:34,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:34,811 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-29 20:31:34,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:34,811 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 20:31:34,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:34,811 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 27 transitions. [2020-11-29 20:31:34,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:31:34,814 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 16 states and 21 transitions. [2020-11-29 20:31:34,814 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 20:31:34,814 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-29 20:31:34,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2020-11-29 20:31:34,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:31:34,815 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2020-11-29 20:31:34,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2020-11-29 20:31:34,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 20:31:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 20:31:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2020-11-29 20:31:34,817 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2020-11-29 20:31:34,817 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2020-11-29 20:31:34,818 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 20:31:34,818 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2020-11-29 20:31:34,819 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:31:34,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:31:34,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:31:34,819 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2020-11-29 20:31:34,820 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:31:34,820 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 235#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 232#L21 assume !!(main_~z~0 <= 1073741823); 233#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 242#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 236#L27 assume !!(main_~z~0 <= 1073741823); 237#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 246#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 238#L27 assume !!(main_~z~0 <= 1073741823); 239#L24-2 [2020-11-29 20:31:34,820 INFO L796 eck$LassoCheckResult]: Loop: 239#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 244#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 239#L24-2 [2020-11-29 20:31:34,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:34,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1630243461, now seen corresponding path program 3 times [2020-11-29 20:31:34,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:34,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693114022] [2020-11-29 20:31:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,839 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:34,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:34,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 3 times [2020-11-29 20:31:34,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:34,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039408035] [2020-11-29 20:31:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,845 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,849 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:34,850 INFO L82 PathProgramCache]: Analyzing trace with hash -999096369, now seen corresponding path program 2 times [2020-11-29 20:31:34,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:34,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265483325] [2020-11-29 20:31:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:34,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:34,869 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:34,924 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:31:34,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:31:34,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:31:34,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:31:34,924 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:31:34,924 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:34,924 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:31:34,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:31:34,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2020-11-29 20:31:34,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:31:34,925 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:31:34,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:34,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:34,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:34,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:35,059 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:31:35,059 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:35,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:31:35,068 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:35,073 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:31:35,073 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:35,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:31:35,124 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:35,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:31:35,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:31:35,199 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:31:35,201 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:31:35,201 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:31:35,201 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:31:35,201 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:31:35,202 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:31:35,202 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:35,202 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:31:35,202 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:31:35,202 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2020-11-29 20:31:35,202 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:31:35,202 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:31:35,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:35,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:35,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:35,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:31:35,339 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:31:35,339 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:35,353 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 20:31:35,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:31:35,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:31:35,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:31:35,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:31:35,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:31:35,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:31:35,357 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:31:35,363 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:31:35,368 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:31:35,368 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a88bf349-1f80-4f8e-8a5a-56f661b19d20/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:31:35,373 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:31:35,373 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:31:35,374 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:31:35,374 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:31:35,399 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:31:35,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:35,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:31:35,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:35,443 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:31:35,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:35,459 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 20:31:35,459 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-29 20:31:35,491 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2020-11-29 20:31:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:31:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:31:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-29 20:31:35,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2020-11-29 20:31:35,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:35,494 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:31:35,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:35,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:31:35,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:35,539 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:31:35,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:35,560 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 [2020-11-29 20:31:35,561 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-29 20:31:35,582 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2020-11-29 20:31:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:31:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:31:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-29 20:31:35,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2020-11-29 20:31:35,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:35,584 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:31:35,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:35,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:31:35,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:35,631 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:31:35,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:35,646 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 [2020-11-29 20:31:35,646 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-29 20:31:35,665 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 21 states and 27 transitions. Complement of second has 4 states. [2020-11-29 20:31:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:31:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:31:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-11-29 20:31:35,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2020-11-29 20:31:35,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:35,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2020-11-29 20:31:35,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:35,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 4 letters. [2020-11-29 20:31:35,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:31:35,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2020-11-29 20:31:35,670 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:31:35,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2020-11-29 20:31:35,670 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 20:31:35,670 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 20:31:35,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 20:31:35,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:31:35,670 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:31:35,670 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:31:35,671 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:31:35,671 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 20:31:35,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:31:35,671 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:31:35,671 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 20:31:35,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:31:35 BoogieIcfgContainer [2020-11-29 20:31:35,679 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:31:35,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:31:35,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:31:35,679 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:31:35,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:31:31" (3/4) ... [2020-11-29 20:31:35,683 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:31:35,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:31:35,685 INFO L168 Benchmark]: Toolchain (without parser) took 5324.16 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.3 MB in the beginning and 69.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:31:35,686 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory was 70.4 MB in the beginning and 70.3 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:31:35,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.31 ms. Allocated memory is still 100.7 MB. Free memory was 66.0 MB in the beginning and 78.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:31:35,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.29 ms. Allocated memory is still 100.7 MB. Free memory was 78.6 MB in the beginning and 77.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:31:35,695 INFO L168 Benchmark]: Boogie Preprocessor took 20.20 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 76.5 MB in the end (delta: 873.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:31:35,695 INFO L168 Benchmark]: RCFGBuilder took 313.73 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 67.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:31:35,696 INFO L168 Benchmark]: BuchiAutomizer took 4643.36 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.5 MB in the beginning and 70.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:31:35,696 INFO L168 Benchmark]: Witness Printer took 4.42 ms. Allocated memory is still 121.6 MB. Free memory was 70.0 MB in the beginning and 69.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:31:35,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory was 70.4 MB in the beginning and 70.3 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.31 ms. Allocated memory is still 100.7 MB. Free memory was 66.0 MB in the beginning and 78.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.29 ms. Allocated memory is still 100.7 MB. Free memory was 78.6 MB in the beginning and 77.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.20 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 76.5 MB in the end (delta: 873.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 313.73 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 67.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4643.36 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 67.5 MB in the beginning and 70.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.42 ms. Allocated memory is still 121.6 MB. Free memory was 70.0 MB in the beginning and 69.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * z + 1 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 2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 50 SDtfs, 47 SDslu, 8 SDs, 0 SdLazy, 34 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf113 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...