./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c -s /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/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 475cf88887990488194ca7f61a6d05f74a450e7b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-6b5699a [2019-11-25 08:56:20,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:20,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:20,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:20,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:20,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:20,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:20,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:20,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:20,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:20,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:20,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:20,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:20,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:20,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:20,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:20,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:20,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:20,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:20,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:20,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:20,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:20,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:20,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:20,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:20,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:20,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:20,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:20,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:20,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:20,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:20,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:20,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:20,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:20,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:20,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:20,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:20,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:20,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:20,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:20,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:20,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:56:20,643 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:20,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:20,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:20,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:20,645 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:20,646 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:56:20,646 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:56:20,646 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:56:20,646 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:56:20,646 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:56:20,647 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:56:20,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:20,648 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:56:20,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:20,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:20,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:56:20,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:56:20,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:56:20,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:20,649 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:56:20,649 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:20,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:56:20,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:20,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:20,650 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:56:20,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:20,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:20,650 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:56:20,651 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:56:20,651 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_37b97850-cad5-4298-90a2-75902937bee1/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 -> 475cf88887990488194ca7f61a6d05f74a450e7b [2019-11-25 08:56:20,799 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:20,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:20,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:20,813 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:20,813 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:20,814 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2019-11-25 08:56:20,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/data/177453067/50e0b82fd6284b44bacc7594a249a236/FLAGb382a855f [2019-11-25 08:56:21,252 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:21,253 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2019-11-25 08:56:21,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/data/177453067/50e0b82fd6284b44bacc7594a249a236/FLAGb382a855f [2019-11-25 08:56:21,271 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/data/177453067/50e0b82fd6284b44bacc7594a249a236 [2019-11-25 08:56:21,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:21,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:21,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:21,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:21,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:21,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5407c053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21, skipping insertion in model container [2019-11-25 08:56:21,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:21,311 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:21,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:21,465 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:21,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:21,552 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:21,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21 WrapperNode [2019-11-25 08:56:21,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:21,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:21,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:21,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:21,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:21,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:21,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:21,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:21,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... [2019-11-25 08:56:21,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:21,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:21,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:21,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:21,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/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 [2019-11-25 08:56:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:21,866 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:21,866 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:56:21,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:21 BoogieIcfgContainer [2019-11-25 08:56:21,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:21,868 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:56:21,868 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:56:21,871 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:56:21,871 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:21,872 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:56:21" (1/3) ... [2019-11-25 08:56:21,873 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e50f900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:21, skipping insertion in model container [2019-11-25 08:56:21,873 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:21,873 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:21" (2/3) ... [2019-11-25 08:56:21,874 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e50f900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:21, skipping insertion in model container [2019-11-25 08:56:21,875 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:21,875 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:21" (3/3) ... [2019-11-25 08:56:21,877 INFO L371 chiAutomizerObserver]: Analyzing ICFG AlternKonv.c [2019-11-25 08:56:21,937 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:56:21,937 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:56:21,938 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:56:21,938 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:21,938 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:21,938 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:56:21,939 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:21,939 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:56:21,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-25 08:56:21,981 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:56:21,982 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:21,982 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:21,990 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:56:21,990 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:21,990 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:56:21,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-25 08:56:21,993 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:56:21,993 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:21,993 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:21,994 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:56:21,995 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:22,001 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L18-2true [2019-11-25 08:56:22,002 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(0 != main_~i~0); 3#L10true assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 6#L12true assume !(main_~i~0 < 0); 5#L18-2true [2019-11-25 08:56:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:22,007 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:56:22,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:22,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879683553] [2019-11-25 08:56:22,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,098 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:22,100 INFO L82 PathProgramCache]: Analyzing trace with hash 39827, now seen corresponding path program 1 times [2019-11-25 08:56:22,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:22,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833556354] [2019-11-25 08:56:22,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,114 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:22,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:22,116 INFO L82 PathProgramCache]: Analyzing trace with hash 963348, now seen corresponding path program 1 times [2019-11-25 08:56:22,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:22,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238648476] [2019-11-25 08:56:22,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,126 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:22,205 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:22,206 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:22,206 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:22,206 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:22,206 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:22,207 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:22,207 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:22,207 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:22,207 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2019-11-25 08:56:22,207 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:22,207 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:22,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,348 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:22,348 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/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 [2019-11-25 08:56:22,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:22,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:22,364 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:22,364 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_37b97850-cad5-4298-90a2-75902937bee1/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 [2019-11-25 08:56:22,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:22,374 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:22,382 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:22,382 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_37b97850-cad5-4298-90a2-75902937bee1/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 [2019-11-25 08:56:22,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:22,387 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/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 [2019-11-25 08:56:22,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:22,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:22,409 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:22,410 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:22,410 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:22,411 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:22,411 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:22,411 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:22,411 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:22,411 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:22,411 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:22,411 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2019-11-25 08:56:22,411 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:22,411 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:22,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,503 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:22,506 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/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 [2019-11-25 08:56:22,512 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 [2019-11-25 08:56:22,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:22,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:22,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:22,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:22,520 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:22,521 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:22,530 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/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 [2019-11-25 08:56:22,542 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 [2019-11-25 08:56:22,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:22,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:22,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:22,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:22,549 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:22,549 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:22,557 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/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 [2019-11-25 08:56:22,564 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 [2019-11-25 08:56:22,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:22,565 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:22,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:22,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:22,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:22,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:22,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:22,576 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:22,580 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:56:22,580 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_37b97850-cad5-4298-90a2-75902937bee1/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) [2019-11-25 08:56:22,595 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:22,595 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:22,595 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:22,596 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:56:22,604 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:22,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:22,658 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:22,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:22,670 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:22,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:22,722 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 [2019-11-25 08:56:22,723 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 4 states. [2019-11-25 08:56:22,785 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 4 states. Result 32 states and 45 transitions. Complement of second has 6 states. [2019-11-25 08:56:22,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:56:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-25 08:56:22,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-25 08:56:22,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:22,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-25 08:56:22,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:22,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-25 08:56:22,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:22,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 45 transitions. [2019-11-25 08:56:22,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:56:22,802 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 14 states and 20 transitions. [2019-11-25 08:56:22,803 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-25 08:56:22,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-25 08:56:22,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-11-25 08:56:22,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:22,805 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-25 08:56:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-11-25 08:56:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-11-25 08:56:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:56:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-11-25 08:56:22,840 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-25 08:56:22,840 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-25 08:56:22,840 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:56:22,840 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-11-25 08:56:22,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:56:22,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:22,841 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:22,842 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:56:22,842 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:22,842 INFO L794 eck$LassoCheckResult]: Stem: 85#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 86#L18-2 assume !!(0 != main_~i~0); 79#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 80#L18 [2019-11-25 08:56:22,843 INFO L796 eck$LassoCheckResult]: Loop: 80#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 89#L18-2 assume !!(0 != main_~i~0); 90#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 80#L18 [2019-11-25 08:56:22,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:22,843 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 1 times [2019-11-25 08:56:22,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:22,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145985276] [2019-11-25 08:56:22,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,852 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:22,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:22,852 INFO L82 PathProgramCache]: Analyzing trace with hash 57996, now seen corresponding path program 1 times [2019-11-25 08:56:22,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:22,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133198804] [2019-11-25 08:56:22,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:22,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133198804] [2019-11-25 08:56:22,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:22,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-25 08:56:22,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99343511] [2019-11-25 08:56:22,890 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:56:22,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:22,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:56:22,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:56:22,894 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-25 08:56:22,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:22,926 INFO L93 Difference]: Finished difference Result 14 states and 20 transitions. [2019-11-25 08:56:22,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:56:22,928 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 20 transitions. [2019-11-25 08:56:22,929 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:56:22,930 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 20 transitions. [2019-11-25 08:56:22,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:56:22,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-25 08:56:22,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-11-25 08:56:22,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:22,931 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-25 08:56:22,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-11-25 08:56:22,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-25 08:56:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:56:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-11-25 08:56:22,933 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-25 08:56:22,933 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-25 08:56:22,933 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:56:22,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-11-25 08:56:22,934 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:56:22,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:22,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:22,934 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:56:22,934 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:22,935 INFO L794 eck$LassoCheckResult]: Stem: 115#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; 116#L18-2 assume !!(0 != main_~i~0); 111#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 112#L18 [2019-11-25 08:56:22,935 INFO L796 eck$LassoCheckResult]: Loop: 112#L18 assume !(main_~i~0 > 0); 122#L18-2 assume !!(0 != main_~i~0); 124#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 112#L18 [2019-11-25 08:56:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:22,935 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 2 times [2019-11-25 08:56:22,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:22,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122834404] [2019-11-25 08:56:22,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,955 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:22,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:22,956 INFO L82 PathProgramCache]: Analyzing trace with hash 59918, now seen corresponding path program 1 times [2019-11-25 08:56:22,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:22,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760302381] [2019-11-25 08:56:22,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:23,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760302381] [2019-11-25 08:56:23,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:23,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:56:23,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309192368] [2019-11-25 08:56:23,007 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:56:23,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:23,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:23,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:23,008 INFO L87 Difference]: Start difference. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-25 08:56:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:23,048 INFO L93 Difference]: Finished difference Result 16 states and 22 transitions. [2019-11-25 08:56:23,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:56:23,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2019-11-25 08:56:23,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-25 08:56:23,050 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 22 transitions. [2019-11-25 08:56:23,050 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-25 08:56:23,050 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-25 08:56:23,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2019-11-25 08:56:23,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:23,050 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2019-11-25 08:56:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2019-11-25 08:56:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-11-25 08:56:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:56:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-11-25 08:56:23,052 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-25 08:56:23,052 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-25 08:56:23,053 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:56:23,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-11-25 08:56:23,061 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:56:23,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:23,062 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:23,062 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:56:23,062 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2019-11-25 08:56:23,063 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 153#L18-2 assume !!(0 != main_~i~0); 148#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 149#L18 [2019-11-25 08:56:23,063 INFO L796 eck$LassoCheckResult]: Loop: 149#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 154#L18-2 assume !!(0 != main_~i~0); 155#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 157#L12 assume !(main_~i~0 < 0); 159#L18-2 assume !!(0 != main_~i~0); 161#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 149#L18 [2019-11-25 08:56:23,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:23,063 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 3 times [2019-11-25 08:56:23,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:23,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981620327] [2019-11-25 08:56:23,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:23,075 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:23,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1727393992, now seen corresponding path program 1 times [2019-11-25 08:56:23,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:23,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526124877] [2019-11-25 08:56:23,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:23,096 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:23,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:23,097 INFO L82 PathProgramCache]: Analyzing trace with hash 684415735, now seen corresponding path program 1 times [2019-11-25 08:56:23,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:23,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431231348] [2019-11-25 08:56:23,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:23,119 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:23,171 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:23,171 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:23,171 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:23,171 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:23,171 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:23,172 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,172 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:23,172 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:23,172 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration4_Loop [2019-11-25 08:56:23,172 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:23,172 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:23,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:23,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:23,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:23,257 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:23,257 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:23,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:23,272 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:23,272 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/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) [2019-11-25 08:56:23,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:23,288 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 [2019-11-25 08:56:23,293 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:23,293 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/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) [2019-11-25 08:56:23,310 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:23,310 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:23,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:23,337 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:23,339 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:23,340 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:23,340 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:23,340 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:23,340 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:23,340 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,340 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:23,340 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:23,340 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration4_Loop [2019-11-25 08:56:23,340 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:23,341 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:23,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:23,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:23,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:23,428 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:23,428 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:23,441 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 [2019-11-25 08:56:23,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,451 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:23,451 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,457 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:23,474 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 [2019-11-25 08:56:23,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:23,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,480 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:23,480 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,485 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:23,487 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:56:23,488 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_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:23,502 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:23,502 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:23,503 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:23,503 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:56:23,505 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:23,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:23,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:23,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:56:23,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:23,565 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:56:23,565 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-25 08:56:23,585 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 25 states and 35 transitions. Complement of second has 5 states. [2019-11-25 08:56:23,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:56:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-25 08:56:23,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-25 08:56:23,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:23,587 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:56:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:23,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:23,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:23,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:56:23,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:23,640 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:56:23,640 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-25 08:56:23,690 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 43 states and 63 transitions. Complement of second has 9 states. [2019-11-25 08:56:23,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:56:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-25 08:56:23,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-25 08:56:23,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:23,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-25 08:56:23,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:23,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 3 letters. Loop has 12 letters. [2019-11-25 08:56:23,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:23,693 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 63 transitions. [2019-11-25 08:56:23,695 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2019-11-25 08:56:23,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 41 states and 60 transitions. [2019-11-25 08:56:23,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-11-25 08:56:23,697 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-25 08:56:23,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 60 transitions. [2019-11-25 08:56:23,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:23,698 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 60 transitions. [2019-11-25 08:56:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 60 transitions. [2019-11-25 08:56:23,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2019-11-25 08:56:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-25 08:56:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 55 transitions. [2019-11-25 08:56:23,702 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 55 transitions. [2019-11-25 08:56:23,703 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 55 transitions. [2019-11-25 08:56:23,703 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:56:23,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 55 transitions. [2019-11-25 08:56:23,704 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2019-11-25 08:56:23,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:23,704 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:23,705 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:56:23,705 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:56:23,705 INFO L794 eck$LassoCheckResult]: Stem: 323#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 324#L18-2 assume !!(0 != main_~i~0); 321#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 322#L12 assume main_~i~0 < 0; 328#L13 [2019-11-25 08:56:23,705 INFO L796 eck$LassoCheckResult]: Loop: 328#L13 assume !(main_~i~0 <= -2147483648);main_~i~0 := -1 * main_~i~0; 334#L18-2 assume !!(0 != main_~i~0); 354#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 352#L12 assume main_~i~0 < 0; 328#L13 [2019-11-25 08:56:23,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:23,706 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2019-11-25 08:56:23,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:23,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883105729] [2019-11-25 08:56:23,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:23,713 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:23,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1559161, now seen corresponding path program 1 times [2019-11-25 08:56:23,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:23,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799565958] [2019-11-25 08:56:23,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:23,733 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:23,735 INFO L82 PathProgramCache]: Analyzing trace with hash 608049029, now seen corresponding path program 1 times [2019-11-25 08:56:23,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:23,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719685060] [2019-11-25 08:56:23,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:23,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719685060] [2019-11-25 08:56:23,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:23,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:56:23,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213505304] [2019-11-25 08:56:23,799 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:23,799 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:23,799 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:23,799 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:23,799 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:23,800 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,800 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:23,800 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:23,800 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration5_Loop [2019-11-25 08:56:23,800 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:23,800 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:23,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:23,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:23,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:23,863 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:23,863 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:23,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:23,887 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,892 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:23,892 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:23,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:23,909 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,913 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:23,914 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:23,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:23,930 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:23,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:23,959 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:24,029 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:24,032 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:24,032 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:24,032 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:24,032 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:24,032 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:24,032 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:24,032 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:24,032 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:24,033 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration5_Loop [2019-11-25 08:56:24,033 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:24,033 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:24,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:24,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:24,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:24,086 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:24,086 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:24,098 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 [2019-11-25 08:56:24,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:24,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:24,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:24,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:24,102 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:24,103 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:24,106 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:24,120 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 [2019-11-25 08:56:24,121 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:24,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:24,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:24,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:24,127 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:24,128 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:24,132 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:24,142 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 [2019-11-25 08:56:24,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:24,144 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:24,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:24,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:24,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:24,146 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:24,146 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:24,149 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:24,156 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:56:24,156 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_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:24,162 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:24,162 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:24,162 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:24,162 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:24,169 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:56:24,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:24,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:24,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:24,197 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:56:24,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:24,223 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:56:24,223 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 55 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-11-25 08:56:24,327 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 55 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 147 states and 212 transitions. Complement of second has 11 states. [2019-11-25 08:56:24,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:24,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:56:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 26 transitions. [2019-11-25 08:56:24,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-25 08:56:24,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:24,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-25 08:56:24,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:24,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 4 letters. Loop has 8 letters. [2019-11-25 08:56:24,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:24,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 147 states and 212 transitions. [2019-11-25 08:56:24,334 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 23 [2019-11-25 08:56:24,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 147 states to 121 states and 178 transitions. [2019-11-25 08:56:24,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-25 08:56:24,337 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-25 08:56:24,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 178 transitions. [2019-11-25 08:56:24,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:24,338 INFO L688 BuchiCegarLoop]: Abstraction has 121 states and 178 transitions. [2019-11-25 08:56:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 178 transitions. [2019-11-25 08:56:24,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 101. [2019-11-25 08:56:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-25 08:56:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions. [2019-11-25 08:56:24,347 INFO L711 BuchiCegarLoop]: Abstraction has 101 states and 153 transitions. [2019-11-25 08:56:24,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:24,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:24,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:24,348 INFO L87 Difference]: Start difference. First operand 101 states and 153 transitions. Second operand 4 states. [2019-11-25 08:56:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:24,379 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2019-11-25 08:56:24,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:56:24,380 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 105 transitions. [2019-11-25 08:56:24,382 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 31 [2019-11-25 08:56:24,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 72 states and 97 transitions. [2019-11-25 08:56:24,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2019-11-25 08:56:24,383 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2019-11-25 08:56:24,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 97 transitions. [2019-11-25 08:56:24,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:24,384 INFO L688 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2019-11-25 08:56:24,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 97 transitions. [2019-11-25 08:56:24,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 35. [2019-11-25 08:56:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-25 08:56:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-11-25 08:56:24,388 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-25 08:56:24,388 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-25 08:56:24,388 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:56:24,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2019-11-25 08:56:24,389 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2019-11-25 08:56:24,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:24,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:24,389 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:56:24,390 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:24,390 INFO L794 eck$LassoCheckResult]: Stem: 746#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 747#L18-2 assume !!(0 != main_~i~0); 766#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 768#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 753#L18-2 [2019-11-25 08:56:24,390 INFO L796 eck$LassoCheckResult]: Loop: 753#L18-2 assume !!(0 != main_~i~0); 773#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 751#L12 assume !(main_~i~0 < 0); 753#L18-2 [2019-11-25 08:56:24,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:24,390 INFO L82 PathProgramCache]: Analyzing trace with hash 963757, now seen corresponding path program 1 times [2019-11-25 08:56:24,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:24,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036295012] [2019-11-25 08:56:24,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,397 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:24,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:24,401 INFO L82 PathProgramCache]: Analyzing trace with hash 39827, now seen corresponding path program 2 times [2019-11-25 08:56:24,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:24,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496647500] [2019-11-25 08:56:24,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,411 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:24,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:24,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1353476249, now seen corresponding path program 2 times [2019-11-25 08:56:24,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:24,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232265406] [2019-11-25 08:56:24,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,455 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:24,486 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:24,487 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:24,487 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:24,487 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:24,487 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:24,487 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:24,487 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:24,487 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:24,487 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration6_Loop [2019-11-25 08:56:24,487 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:24,487 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:24,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:24,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:24,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:24,542 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:24,542 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:24,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:24,548 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:24,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:24,558 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:24,567 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:24,569 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:24,569 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:24,569 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:24,569 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:24,569 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:24,569 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:24,569 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:24,570 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:24,570 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration6_Loop [2019-11-25 08:56:24,570 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:24,570 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:24,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:24,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:24,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:24,637 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:24,637 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:24,643 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:24,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:24,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:24,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:24,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:24,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:24,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:24,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:24,653 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:24,658 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:56:24,658 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_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:24,662 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:24,662 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:24,662 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:24,662 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:24,665 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:56:24,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:24,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:24,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:24,699 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:24,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:24,711 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 [2019-11-25 08:56:24,711 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 4 states. [2019-11-25 08:56:24,729 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 4 states. Result 73 states and 96 transitions. Complement of second has 5 states. [2019-11-25 08:56:24,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:56:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2019-11-25 08:56:24,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-25 08:56:24,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:24,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-25 08:56:24,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:24,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-25 08:56:24,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:24,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 96 transitions. [2019-11-25 08:56:24,733 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-11-25 08:56:24,734 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 65 states and 88 transitions. [2019-11-25 08:56:24,734 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-25 08:56:24,734 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2019-11-25 08:56:24,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 88 transitions. [2019-11-25 08:56:24,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:24,734 INFO L688 BuchiCegarLoop]: Abstraction has 65 states and 88 transitions. [2019-11-25 08:56:24,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 88 transitions. [2019-11-25 08:56:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2019-11-25 08:56:24,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-25 08:56:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2019-11-25 08:56:24,739 INFO L711 BuchiCegarLoop]: Abstraction has 57 states and 80 transitions. [2019-11-25 08:56:24,740 INFO L591 BuchiCegarLoop]: Abstraction has 57 states and 80 transitions. [2019-11-25 08:56:24,740 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-25 08:56:24,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 80 transitions. [2019-11-25 08:56:24,741 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-11-25 08:56:24,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:24,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:24,741 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:56:24,741 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2019-11-25 08:56:24,742 INFO L794 eck$LassoCheckResult]: Stem: 896#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 897#L18-2 assume !!(0 != main_~i~0); 927#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 925#L18 assume !(main_~i~0 > 0); 908#L18-2 [2019-11-25 08:56:24,742 INFO L796 eck$LassoCheckResult]: Loop: 908#L18-2 assume !!(0 != main_~i~0); 948#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 936#L12 assume !(main_~i~0 < 0); 947#L18-2 assume !!(0 != main_~i~0); 935#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 893#L18 assume !(main_~i~0 > 0); 908#L18-2 [2019-11-25 08:56:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:24,742 INFO L82 PathProgramCache]: Analyzing trace with hash 963759, now seen corresponding path program 1 times [2019-11-25 08:56:24,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:24,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129790546] [2019-11-25 08:56:24,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,748 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:24,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:24,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1186496604, now seen corresponding path program 1 times [2019-11-25 08:56:24,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:24,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180305218] [2019-11-25 08:56:24,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,756 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:24,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:24,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1517058698, now seen corresponding path program 1 times [2019-11-25 08:56:24,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:24,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511781401] [2019-11-25 08:56:24,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:24,778 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:24,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:56:24 BoogieIcfgContainer [2019-11-25 08:56:24,875 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:56:24,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:24,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:24,876 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:24,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:21" (3/4) ... [2019-11-25 08:56:24,879 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-25 08:56:24,925 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_37b97850-cad5-4298-90a2-75902937bee1/bin/uautomizer/witness.graphml [2019-11-25 08:56:24,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:24,931 INFO L168 Benchmark]: Toolchain (without parser) took 3654.20 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 242.2 MB). Free memory was 947.4 MB in the beginning and 1.2 GB in the end (delta: -208.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:24,932 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:24,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 947.4 MB in the beginning and 1.2 GB in the end (delta: -222.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:24,933 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:24,933 INFO L168 Benchmark]: Boogie Preprocessor took 15.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:24,933 INFO L168 Benchmark]: RCFGBuilder took 265.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:24,934 INFO L168 Benchmark]: BuchiAutomizer took 3007.10 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.1 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -6.0 MB). Peak memory consumption was 61.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:24,934 INFO L168 Benchmark]: Witness Printer took 53.69 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:24,940 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.1 MB). Free memory was 947.4 MB in the beginning and 1.2 GB in the end (delta: -222.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 265.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3007.10 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.1 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -6.0 MB). Peak memory consumption was 61.1 MB. Max. memory is 11.5 GB. * Witness Printer took 53.69 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. 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 7 terminating modules (3 trivial, 4 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 6 locations. One deterministic module has affine ranking function -1 * i and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 57 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 2.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 74 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 57 states and ocurred in iteration 6. Nontrivial modules had stage [3, 1, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 61 SDtfs, 69 SDslu, 3 SDs, 0 SdLazy, 142 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT3 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax190 hnf98 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp93 dnf100 smp100 tf111 neg98 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: 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@7a7a64b7=0, \result=0, i=-1} - 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 i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) Loop: [L9] COND TRUE i != 0 [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...