./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex07.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_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex07.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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 f77d0d21d7cb1d6a29608eb65655982c4edaf4ed ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:02:13,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:02:13,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:02:13,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:02:13,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:02:13,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:02:13,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:02:13,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:02:13,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:02:13,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:02:13,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:02:13,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:02:13,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:02:13,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:02:13,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:02:13,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:02:13,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:02:13,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:02:13,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:02:13,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:02:13,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:02:13,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:02:13,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:02:13,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:02:13,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:02:13,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:02:13,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:02:13,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:02:13,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:02:13,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:02:13,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:02:13,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:02:13,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:02:13,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:02:13,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:02:13,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:02:13,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:02:13,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:02:13,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:02:13,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:02:13,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:02:13,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 01:02:13,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:02:13,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:02:13,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:02:13,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:02:13,799 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:02:13,799 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:02:13,800 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:02:13,800 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:02:13,800 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:02:13,800 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:02:13,802 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:02:13,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:02:13,802 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:02:13,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:02:13,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:02:13,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:02:13,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:02:13,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:02:13,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:02:13,804 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:02:13,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:02:13,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:02:13,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:02:13,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:02:13,806 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:02:13,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:02:13,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:02:13,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:02:13,807 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:02:13,810 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:02:13,810 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_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f77d0d21d7cb1d6a29608eb65655982c4edaf4ed [2020-11-30 01:02:14,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:02:14,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:02:14,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:02:14,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:02:14,229 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:02:14,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex07.c [2020-11-30 01:02:14,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer/data/2038d226b/bb8f345cab1a49d9bb5e4760e1106b11/FLAG36dd36b84 [2020-11-30 01:02:14,991 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:02:14,992 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/sv-benchmarks/c/termination-restricted-15/Ex07.c [2020-11-30 01:02:15,005 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer/data/2038d226b/bb8f345cab1a49d9bb5e4760e1106b11/FLAG36dd36b84 [2020-11-30 01:02:15,356 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer/data/2038d226b/bb8f345cab1a49d9bb5e4760e1106b11 [2020-11-30 01:02:15,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:02:15,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:02:15,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:02:15,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:02:15,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:02:15,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:02:15" (1/1) ... [2020-11-30 01:02:15,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be0d93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15, skipping insertion in model container [2020-11-30 01:02:15,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:02:15" (1/1) ... [2020-11-30 01:02:15,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:02:15,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:02:15,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:02:15,659 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:02:15,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:02:15,708 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:02:15,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15 WrapperNode [2020-11-30 01:02:15,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:02:15,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:02:15,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:02:15,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:02:15,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15" (1/1) ... [2020-11-30 01:02:15,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15" (1/1) ... [2020-11-30 01:02:15,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:02:15,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:02:15,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:02:15,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:02:15,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15" (1/1) ... [2020-11-30 01:02:15,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15" (1/1) ... [2020-11-30 01:02:15,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15" (1/1) ... [2020-11-30 01:02:15,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15" (1/1) ... [2020-11-30 01:02:15,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15" (1/1) ... [2020-11-30 01:02:15,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15" (1/1) ... [2020-11-30 01:02:15,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15" (1/1) ... [2020-11-30 01:02:15,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:02:15,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:02:15,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:02:15,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:02:15,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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 [2020-11-30 01:02:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:02:15,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:02:16,032 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:02:16,033 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 01:02:16,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:02:16 BoogieIcfgContainer [2020-11-30 01:02:16,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:02:16,039 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:02:16,039 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:02:16,044 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:02:16,045 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:02:16,045 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:02:15" (1/3) ... [2020-11-30 01:02:16,046 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@cce7aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:02:16, skipping insertion in model container [2020-11-30 01:02:16,047 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:02:16,047 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:02:15" (2/3) ... [2020-11-30 01:02:16,047 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@cce7aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:02:16, skipping insertion in model container [2020-11-30 01:02:16,048 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:02:16,048 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:02:16" (3/3) ... [2020-11-30 01:02:16,049 INFO L373 chiAutomizerObserver]: Analyzing ICFG Ex07.c [2020-11-30 01:02:16,131 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:02:16,131 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:02:16,131 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:02:16,131 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:02:16,131 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:02:16,132 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:02:16,132 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:02:16,132 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:02:16,147 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 01:02:16,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:02:16,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:02:16,170 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:02:16,176 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 01:02:16,176 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:02:16,176 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:02:16,177 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 01:02:16,179 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:02:16,179 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:02:16,179 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:02:16,179 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 01:02:16,180 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:02:16,187 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2020-11-30 01:02:16,188 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(0 != ~unnamed0~0~true); 3#L10true assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 9#L10-2true assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 5#L13-1true [2020-11-30 01:02:16,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:16,197 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-30 01:02:16,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:16,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282546728] [2020-11-30 01:02:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:16,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:16,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:16,333 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:16,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:16,338 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2020-11-30 01:02:16,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:16,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615242432] [2020-11-30 01:02:16,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:02:16,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615242432] [2020-11-30 01:02:16,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:02:16,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:02:16,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952743468] [2020-11-30 01:02:16,495 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:02:16,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:02:16,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:02:16,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:02:16,532 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2020-11-30 01:02:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:02:16,651 INFO L93 Difference]: Finished difference Result 7 states and 10 transitions. [2020-11-30 01:02:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:02:16,655 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2020-11-30 01:02:16,657 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 01:02:16,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 10 transitions. [2020-11-30 01:02:16,662 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-30 01:02:16,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-30 01:02:16,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-30 01:02:16,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:02:16,664 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-30 01:02:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-30 01:02:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-30 01:02:16,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 01:02:16,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-30 01:02:16,696 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-30 01:02:16,696 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-30 01:02:16,696 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:02:16,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-30 01:02:16,698 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 01:02:16,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:02:16,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:02:16,699 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 01:02:16,699 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:02:16,699 INFO L794 eck$LassoCheckResult]: Stem: 27#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 28#L13-1 [2020-11-30 01:02:16,700 INFO L796 eck$LassoCheckResult]: Loop: 28#L13-1 assume !!(0 != ~unnamed0~0~true); 24#L10 assume !(main_~i~0 > 0); 26#L10-2 assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 28#L13-1 [2020-11-30 01:02:16,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:16,713 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-11-30 01:02:16,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:16,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015678073] [2020-11-30 01:02:16,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:16,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:16,721 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:16,722 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:16,723 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2020-11-30 01:02:16,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:16,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737967097] [2020-11-30 01:02:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:16,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:16,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:16,751 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 1 times [2020-11-30 01:02:16,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:16,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831283334] [2020-11-30 01:02:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:16,774 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:16,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:16,780 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:16,855 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:16,856 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:16,856 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:16,856 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:16,857 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:02:16,857 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:16,857 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:16,857 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:16,857 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration2_Loop [2020-11-30 01:02:16,857 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:16,858 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:16,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:16,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:16,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:17,051 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:17,051 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) [2020-11-30 01:02:17,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:17,063 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:17,075 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:17,075 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_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:17,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:17,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:17,134 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:17,135 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_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:17,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:17,172 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:17,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:02:17,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:17,234 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:02:17,243 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:17,244 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:17,244 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:17,244 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:17,244 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:02:17,244 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:17,244 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:17,244 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:17,245 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration2_Loop [2020-11-30 01:02:17,245 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:17,245 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:17,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:17,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:17,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:17,388 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:17,393 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) [2020-11-30 01:02:17,404 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 [2020-11-30 01:02:17,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:17,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:17,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:17,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:17,418 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:02:17,419 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 [2020-11-30 01:02:17,443 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) [2020-11-30 01:02:17,523 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 [2020-11-30 01:02:17,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:17,525 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:17,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:17,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:17,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:17,529 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:17,529 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:17,543 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:02:17,548 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 01:02:17,548 INFO L444 ModelExtractionUtils]: 1 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_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:17,555 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:02:17,556 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:02:17,556 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:02:17,557 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-30 01:02:17,589 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:02:17,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:17,668 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:02:17,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:17,681 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:02:17,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:02:17,688 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-30 01:02:17,689 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-30 01:02:17,740 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 16 states and 22 transitions. Complement of second has 5 states. [2020-11-30 01:02:17,742 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 [2020-11-30 01:02:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:02:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-30 01:02:17,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-30 01:02:17,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:17,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-30 01:02:17,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:17,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-30 01:02:17,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:17,750 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2020-11-30 01:02:17,752 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 01:02:17,755 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 18 transitions. [2020-11-30 01:02:17,756 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-30 01:02:17,756 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-30 01:02:17,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2020-11-30 01:02:17,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:02:17,757 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-11-30 01:02:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2020-11-30 01:02:17,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 8. [2020-11-30 01:02:17,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 01:02:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2020-11-30 01:02:17,760 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-30 01:02:17,760 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-30 01:02:17,761 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:02:17,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2020-11-30 01:02:17,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:02:17,763 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:02:17,764 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:02:17,767 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:02:17,767 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:02:17,770 INFO L794 eck$LassoCheckResult]: Stem: 83#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 84#L13-1 assume !!(0 != ~unnamed0~0~true); 79#L10 [2020-11-30 01:02:17,771 INFO L796 eck$LassoCheckResult]: Loop: 79#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 80#L10-2 assume !(main_~i~0 < 0); 85#L13-1 assume !!(0 != ~unnamed0~0~true); 79#L10 [2020-11-30 01:02:17,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:17,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-30 01:02:17,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:17,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591755323] [2020-11-30 01:02:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:17,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:17,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:17,793 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:17,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:17,795 INFO L82 PathProgramCache]: Analyzing trace with hash 42945, now seen corresponding path program 1 times [2020-11-30 01:02:17,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:17,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866306237] [2020-11-30 01:02:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:17,807 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:17,814 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:17,818 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:17,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:17,819 INFO L82 PathProgramCache]: Analyzing trace with hash 29863736, now seen corresponding path program 1 times [2020-11-30 01:02:17,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:17,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686054266] [2020-11-30 01:02:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:17,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:17,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:17,850 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:17,898 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:17,898 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:17,898 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:17,898 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:17,899 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:02:17,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:17,899 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:17,899 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:17,899 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration3_Loop [2020-11-30 01:02:17,899 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:17,899 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:17,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:17,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:17,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:18,048 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:18,049 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) [2020-11-30 01:02:18,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:18,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:02:18,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:02:18,081 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: [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) [2020-11-30 01:02:18,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:02:18,131 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) [2020-11-30 01:02:18,189 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:02:18,189 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:18,295 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:02:18,298 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:02:18,299 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:02:18,299 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:02:18,299 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:02:18,299 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:02:18,299 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:18,299 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:02:18,299 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:02:18,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration3_Loop [2020-11-30 01:02:18,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:02:18,300 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:02:18,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:18,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:18,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:02:18,396 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:02:18,397 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) [2020-11-30 01:02:18,400 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 [2020-11-30 01:02:18,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:02:18,403 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:02:18,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:02:18,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:02:18,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:02:18,405 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:02:18,405 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:18,411 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:02:18,414 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-30 01:02:18,414 INFO L444 ModelExtractionUtils]: 1 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_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/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) [2020-11-30 01:02:18,422 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:02:18,422 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:02:18,422 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:02:18,422 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:02:18,463 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:02:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:18,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:02:18,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:02:18,505 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:02:18,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:02:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:02:18,563 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 [2020-11-30 01:02:18,563 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-30 01:02:18,583 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 21 states and 28 transitions. Complement of second has 5 states. [2020-11-30 01:02:18,584 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 [2020-11-30 01:02:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:02:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 01:02:18,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 2 letters. Loop has 3 letters. [2020-11-30 01:02:18,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:18,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-30 01:02:18,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:18,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 2 letters. Loop has 6 letters. [2020-11-30 01:02:18,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:02:18,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2020-11-30 01:02:18,588 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 01:02:18,589 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 27 transitions. [2020-11-30 01:02:18,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-30 01:02:18,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 01:02:18,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2020-11-30 01:02:18,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:02:18,590 INFO L691 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2020-11-30 01:02:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2020-11-30 01:02:18,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2020-11-30 01:02:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 01:02:18,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2020-11-30 01:02:18,594 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2020-11-30 01:02:18,594 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2020-11-30 01:02:18,594 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:02:18,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 23 transitions. [2020-11-30 01:02:18,595 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 01:02:18,595 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:02:18,595 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:02:18,596 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 01:02:18,596 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:02:18,596 INFO L794 eck$LassoCheckResult]: Stem: 149#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 150#L13-1 assume !!(0 != ~unnamed0~0~true); 158#L10 assume !(main_~i~0 > 0); 145#L10-2 [2020-11-30 01:02:18,596 INFO L796 eck$LassoCheckResult]: Loop: 145#L10-2 assume !(main_~i~0 < 0); 154#L13-1 assume !!(0 != ~unnamed0~0~true); 144#L10 assume !(main_~i~0 > 0); 145#L10-2 [2020-11-30 01:02:18,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:18,597 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-11-30 01:02:18,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:18,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257986730] [2020-11-30 01:02:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:18,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:18,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:18,606 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:18,607 INFO L82 PathProgramCache]: Analyzing trace with hash 50297, now seen corresponding path program 1 times [2020-11-30 01:02:18,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:18,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96409377] [2020-11-30 01:02:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:18,618 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:18,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:18,624 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:18,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:02:18,625 INFO L82 PathProgramCache]: Analyzing trace with hash 925835413, now seen corresponding path program 1 times [2020-11-30 01:02:18,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:02:18,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072753039] [2020-11-30 01:02:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:02:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:18,635 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:02:18,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:02:18,649 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:02:18,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:02:18 BoogieIcfgContainer [2020-11-30 01:02:18,728 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:02:18,730 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:02:18,731 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:02:18,731 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:02:18,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:02:16" (3/4) ... [2020-11-30 01:02:18,734 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 01:02:18,789 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bfa1d6cb-e8f4-4e58-99b1-3a18f29d6ee7/bin/uautomizer/witness.graphml [2020-11-30 01:02:18,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:02:18,792 INFO L168 Benchmark]: Toolchain (without parser) took 3430.04 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 73.0 MB in the beginning and 74.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:02:18,794 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory was 59.0 MB in the beginning and 59.0 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:02:18,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.09 ms. Allocated memory is still 100.7 MB. Free memory was 72.7 MB in the beginning and 79.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:02:18,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.20 ms. Allocated memory is still 100.7 MB. Free memory was 79.5 MB in the beginning and 78.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:02:18,796 INFO L168 Benchmark]: Boogie Preprocessor took 19.74 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 77.2 MB in the end (delta: 976.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:02:18,796 INFO L168 Benchmark]: RCFGBuilder took 277.04 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 69.5 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:02:18,797 INFO L168 Benchmark]: BuchiAutomizer took 2688.96 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 69.2 MB in the beginning and 75.6 MB in the end (delta: -6.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:02:18,797 INFO L168 Benchmark]: Witness Printer took 60.07 ms. Allocated memory is still 130.0 MB. Free memory was 75.6 MB in the beginning and 74.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:02:18,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory was 59.0 MB in the beginning and 59.0 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.09 ms. Allocated memory is still 100.7 MB. Free memory was 72.7 MB in the beginning and 79.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.20 ms. Allocated memory is still 100.7 MB. Free memory was 79.5 MB in the beginning and 78.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.74 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 77.2 MB in the end (delta: 976.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 277.04 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 69.5 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2688.96 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 69.2 MB in the beginning and 75.6 MB in the end (delta: -6.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * Witness Printer took 60.07 ms. Allocated memory is still 130.0 MB. Free memory was 75.6 MB in the beginning and 74.2 MB in the end (delta: 1.4 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 3 locations. One deterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 16 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 11 SDtfs, 10 SDslu, 3 SDs, 0 SdLazy, 22 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax214 hnf97 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 48ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@deedf26=0, \result=0, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE \read(true) [L10] COND FALSE !(i > 0) Loop: [L13] COND FALSE !(i < 0) [L9] COND TRUE \read(true) [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...