./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/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 bbffee41c5a3e36a7439f4e96877154fc3cf2a16 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 16:08:10,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:08:10,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:08:10,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:08:10,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:08:10,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:08:10,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:08:10,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:08:10,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:08:10,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:08:10,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:08:10,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:08:10,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:08:10,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:08:10,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:08:10,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:08:10,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:08:10,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:08:10,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:08:10,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:08:10,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:08:10,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:08:10,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:08:10,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:08:10,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:08:10,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:08:10,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:08:10,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:08:10,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:08:10,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:08:10,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:08:10,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:08:10,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:08:10,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:08:10,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:08:10,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:08:10,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:08:10,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:08:10,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:08:10,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:08:10,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:08:10,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 16:08:10,745 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:08:10,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:08:10,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:08:10,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:08:10,747 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:08:10,747 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 16:08:10,747 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 16:08:10,747 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 16:08:10,747 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 16:08:10,748 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 16:08:10,748 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 16:08:10,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:08:10,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 16:08:10,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:08:10,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:08:10,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 16:08:10,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 16:08:10,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 16:08:10,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:08:10,749 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 16:08:10,750 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:08:10,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 16:08:10,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:08:10,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:08:10,750 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 16:08:10,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:08:10,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 16:08:10,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:08:10,751 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 16:08:10,752 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 16:08:10,752 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_2645185d-825e-4b9e-bdbd-448f5fb5b021/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 -> bbffee41c5a3e36a7439f4e96877154fc3cf2a16 [2019-12-07 16:08:10,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:08:10,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:08:10,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:08:10,871 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:08:10,871 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:08:10,872 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2019-12-07 16:08:10,908 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/bin/uautomizer/data/fe7de1465/66ba5775a7534892b49bdcacc1521f01/FLAG41c6b53f8 [2019-12-07 16:08:11,209 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:08:11,209 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2019-12-07 16:08:11,213 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/bin/uautomizer/data/fe7de1465/66ba5775a7534892b49bdcacc1521f01/FLAG41c6b53f8 [2019-12-07 16:08:11,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/bin/uautomizer/data/fe7de1465/66ba5775a7534892b49bdcacc1521f01 [2019-12-07 16:08:11,223 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:08:11,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:08:11,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:08:11,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:08:11,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:08:11,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:08:11" (1/1) ... [2019-12-07 16:08:11,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8ebb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11, skipping insertion in model container [2019-12-07 16:08:11,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:08:11" (1/1) ... [2019-12-07 16:08:11,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:08:11,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:08:11,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:08:11,340 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:08:11,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:08:11,393 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:08:11,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11 WrapperNode [2019-12-07 16:08:11,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:08:11,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:08:11,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:08:11,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:08:11,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11" (1/1) ... [2019-12-07 16:08:11,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11" (1/1) ... [2019-12-07 16:08:11,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:08:11,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:08:11,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:08:11,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:08:11,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11" (1/1) ... [2019-12-07 16:08:11,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11" (1/1) ... [2019-12-07 16:08:11,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11" (1/1) ... [2019-12-07 16:08:11,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11" (1/1) ... [2019-12-07 16:08:11,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11" (1/1) ... [2019-12-07 16:08:11,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11" (1/1) ... [2019-12-07 16:08:11,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11" (1/1) ... [2019-12-07 16:08:11,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:08:11,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:08:11,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:08:11,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:08:11,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/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 [2019-12-07 16:08:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:08:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:08:11,559 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:08:11,559 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 16:08:11,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:08:11 BoogieIcfgContainer [2019-12-07 16:08:11,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:08:11,561 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 16:08:11,561 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 16:08:11,563 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 16:08:11,564 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 16:08:11,564 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 04:08:11" (1/3) ... [2019-12-07 16:08:11,564 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71b3f61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 04:08:11, skipping insertion in model container [2019-12-07 16:08:11,564 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 16:08:11,564 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:08:11" (2/3) ... [2019-12-07 16:08:11,565 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71b3f61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 04:08:11, skipping insertion in model container [2019-12-07 16:08:11,565 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 16:08:11,565 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:08:11" (3/3) ... [2019-12-07 16:08:11,566 INFO L371 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig1.c [2019-12-07 16:08:11,595 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 16:08:11,595 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 16:08:11,595 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 16:08:11,595 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:08:11,595 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:08:11,596 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 16:08:11,596 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:08:11,596 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 16:08:11,604 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-12-07 16:08:11,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 16:08:11,617 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:08:11,617 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:08:11,621 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 16:08:11,621 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 16:08:11,621 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 16:08:11,621 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-12-07 16:08:11,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 16:08:11,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:08:11,622 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:08:11,622 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 16:08:11,622 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 16:08:11,627 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L18-2true [2019-12-07 16:08:11,627 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 <= 10); 8#L18true assume main_~x~0 > 6;main_~x~0 := 2 + main_~x~0; 5#L18-2true [2019-12-07 16:08:11,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:08:11,631 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 16:08:11,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:08:11,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222385966] [2019-12-07 16:08:11,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:08:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:11,698 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:08:11,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:08:11,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-12-07 16:08:11,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:08:11,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31655838] [2019-12-07 16:08:11,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:08:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:11,709 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:08:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:08:11,710 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-12-07 16:08:11,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:08:11,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6775000] [2019-12-07 16:08:11,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:08:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:11,717 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:08:11,749 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:08:11,750 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:08:11,750 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:08:11,750 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:08:11,750 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 16:08:11,750 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:08:11,750 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:08:11,751 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:08:11,751 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig1.c_Iteration1_Loop [2019-12-07 16:08:11,751 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:08:11,751 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:08:11,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:08:11,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:08:11,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:08:11,838 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:08:11,839 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/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 [2019-12-07 16:08:11,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:08:11,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:08:11,850 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 16:08:11,850 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_2645185d-825e-4b9e-bdbd-448f5fb5b021/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 [2019-12-07 16:08:11,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:08:11,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:08:11,858 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 16:08:11,858 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_2645185d-825e-4b9e-bdbd-448f5fb5b021/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 [2019-12-07 16:08:11,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 16:08:11,862 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/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 [2019-12-07 16:08:11,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 16:08:11,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 16:08:11,875 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 16:08:11,876 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 16:08:11,877 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 16:08:11,877 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 16:08:11,877 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 16:08:11,877 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 16:08:11,877 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:08:11,877 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 16:08:11,877 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 16:08:11,877 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig1.c_Iteration1_Loop [2019-12-07 16:08:11,877 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 16:08:11,878 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 16:08:11,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:08:11,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:08:11,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 16:08:11,924 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 16:08:11,928 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:08:11,932 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 [2019-12-07 16:08:11,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:08:11,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:08:11,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:08:11,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:08:11,938 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:08:11,938 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:08:11,942 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:08:11,946 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 [2019-12-07 16:08:11,947 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:08:11,947 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:08:11,947 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:08:11,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:08:11,950 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 16:08:11,950 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 16:08:11,953 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/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 [2019-12-07 16:08:11,957 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 [2019-12-07 16:08:11,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 16:08:11,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 16:08:11,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 16:08:11,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 16:08:11,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 16:08:11,960 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 16:08:11,960 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 16:08:11,962 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 16:08:11,965 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 16:08:11,965 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_2645185d-825e-4b9e-bdbd-448f5fb5b021/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 16:08:11,968 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 16:08:11,969 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 16:08:11,969 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 16:08:11,969 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 + 11 Supporting invariants [] [2019-12-07 16:08:11,973 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 16:08:11,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:08:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:08:11,997 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:08:11,998 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:08:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:08:12,004 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:08:12,004 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:08:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:08:12,024 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 [2019-12-07 16:08:12,025 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-12-07 16:08:12,057 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2019-12-07 16:08:12,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 16:08:12,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 16:08:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-12-07 16:08:12,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2019-12-07 16:08:12,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:08:12,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 16:08:12,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:08:12,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 16:08:12,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 16:08:12,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2019-12-07 16:08:12,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 16:08:12,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2019-12-07 16:08:12,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 16:08:12,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 16:08:12,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-12-07 16:08:12,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 16:08:12,066 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 16:08:12,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-12-07 16:08:12,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-12-07 16:08:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 16:08:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-12-07 16:08:12,083 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 16:08:12,083 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 16:08:12,083 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 16:08:12,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-12-07 16:08:12,084 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 16:08:12,084 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 16:08:12,084 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 16:08:12,084 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 16:08:12,084 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 16:08:12,084 INFO L794 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 64#L18-2 assume !!(main_~x~0 <= 10); 66#L18 [2019-12-07 16:08:12,084 INFO L796 eck$LassoCheckResult]: Loop: 66#L18 assume !(main_~x~0 > 6); 65#L18-2 assume !!(main_~x~0 <= 10); 66#L18 [2019-12-07 16:08:12,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:08:12,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 16:08:12,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:08:12,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30505373] [2019-12-07 16:08:12,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:08:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:12,088 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:08:12,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:08:12,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-12-07 16:08:12,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:08:12,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104407739] [2019-12-07 16:08:12,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:08:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:12,093 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:08:12,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:08:12,094 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2019-12-07 16:08:12,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:08:12,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921925125] [2019-12-07 16:08:12,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:08:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:08:12,098 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:08:12,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 04:08:12 BoogieIcfgContainer [2019-12-07 16:08:12,121 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 16:08:12,121 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:08:12,121 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:08:12,122 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:08:12,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:08:11" (3/4) ... [2019-12-07 16:08:12,124 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-12-07 16:08:12,148 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2645185d-825e-4b9e-bdbd-448f5fb5b021/bin/uautomizer/witness.graphml [2019-12-07 16:08:12,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:08:12,150 INFO L168 Benchmark]: Toolchain (without parser) took 925.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 943.6 MB in the beginning and 995.9 MB in the end (delta: -52.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:08:12,150 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:08:12,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:08:12,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:08:12,151 INFO L168 Benchmark]: Boogie Preprocessor took 11.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:08:12,151 INFO L168 Benchmark]: RCFGBuilder took 134.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:08:12,152 INFO L168 Benchmark]: BuchiAutomizer took 560.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 995.9 MB in the end (delta: 89.8 MB). Peak memory consumption was 89.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:08:12,152 INFO L168 Benchmark]: Witness Printer took 26.72 ms. Allocated memory is still 1.1 GB. Free memory is still 995.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:08:12,154 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 134.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 560.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 995.9 MB in the end (delta: 89.8 MB). Peak memory consumption was 89.8 MB. Max. memory is 11.5 GB. * Witness Printer took 26.72 ms. Allocated memory is still 1.1 GB. Free memory is still 995.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * x + 11 and consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 18]: 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@1aa4bac3=0, \result=0, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int x; [L16] x = __VERIFIER_nondet_int() [L17] COND TRUE x <= 10 Loop: [L18] COND FALSE !(x > 6) [L17] COND TRUE x <= 10 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...