./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c -s /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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 0.1.25-f470102 [2019-12-07 13:57:35,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:57:35,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:57:35,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:57:35,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:57:35,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:57:35,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:57:35,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:57:35,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:57:35,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:57:35,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:57:35,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:57:35,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:57:35,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:57:35,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:57:35,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:57:35,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:57:35,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:57:35,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:57:35,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:57:35,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:57:35,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:57:35,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:57:35,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:57:35,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:57:35,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:57:35,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:57:35,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:57:35,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:57:35,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:57:35,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:57:35,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:57:35,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:57:35,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:57:35,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:57:35,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:57:35,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:57:35,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:57:35,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:57:35,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:57:35,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:57:35,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 13:57:35,275 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:57:35,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:57:35,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:57:35,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:57:35,276 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:57:35,276 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 13:57:35,276 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 13:57:35,276 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 13:57:35,277 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 13:57:35,277 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 13:57:35,277 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 13:57:35,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:57:35,277 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 13:57:35,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:57:35,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:57:35,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 13:57:35,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 13:57:35,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 13:57:35,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:57:35,278 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 13:57:35,278 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:57:35,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 13:57:35,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:57:35,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:57:35,278 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 13:57:35,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:57:35,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:57:35,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:57:35,279 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 13:57:35,279 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 13:57:35,279 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_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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 [2019-12-07 13:57:35,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:57:35,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:57:35,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:57:35,389 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:57:35,389 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:57:35,389 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2019-12-07 13:57:35,426 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/data/c98496979/ba89ff9a75614ec19fdab29b47adc35f/FLAG96a1bddc9 [2019-12-07 13:57:35,736 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:57:35,736 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2019-12-07 13:57:35,740 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/data/c98496979/ba89ff9a75614ec19fdab29b47adc35f/FLAG96a1bddc9 [2019-12-07 13:57:35,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/data/c98496979/ba89ff9a75614ec19fdab29b47adc35f [2019-12-07 13:57:35,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:57:35,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:57:35,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:57:35,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:57:35,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:57:35,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:57:35" (1/1) ... [2019-12-07 13:57:35,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f08bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35, skipping insertion in model container [2019-12-07 13:57:35,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:57:35" (1/1) ... [2019-12-07 13:57:35,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:57:35,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:57:35,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:57:35,876 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:57:35,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:57:35,934 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:57:35,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35 WrapperNode [2019-12-07 13:57:35,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:57:35,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:57:35,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:57:35,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:57:35,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35" (1/1) ... [2019-12-07 13:57:35,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35" (1/1) ... [2019-12-07 13:57:35,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:57:35,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:57:35,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:57:35,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:57:35,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35" (1/1) ... [2019-12-07 13:57:35,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35" (1/1) ... [2019-12-07 13:57:35,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35" (1/1) ... [2019-12-07 13:57:35,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35" (1/1) ... [2019-12-07 13:57:35,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35" (1/1) ... [2019-12-07 13:57:35,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35" (1/1) ... [2019-12-07 13:57:35,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35" (1/1) ... [2019-12-07 13:57:35,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:57:35,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:57:35,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:57:35,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:57:35,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:57:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:57:36,106 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:57:36,107 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 13:57:36,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:57:36 BoogieIcfgContainer [2019-12-07 13:57:36,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:57:36,108 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 13:57:36,108 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 13:57:36,110 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 13:57:36,110 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 13:57:36,111 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 01:57:35" (1/3) ... [2019-12-07 13:57:36,111 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@732dbd6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 01:57:36, skipping insertion in model container [2019-12-07 13:57:36,111 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 13:57:36,111 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:57:35" (2/3) ... [2019-12-07 13:57:36,112 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@732dbd6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 01:57:36, skipping insertion in model container [2019-12-07 13:57:36,112 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 13:57:36,112 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:57:36" (3/3) ... [2019-12-07 13:57:36,113 INFO L371 chiAutomizerObserver]: Analyzing ICFG AlternKonv.c [2019-12-07 13:57:36,142 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 13:57:36,143 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 13:57:36,143 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 13:57:36,143 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:57:36,143 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:57:36,143 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 13:57:36,143 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:57:36,143 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 13:57:36,152 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-12-07 13:57:36,164 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 13:57:36,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:57:36,165 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:57:36,169 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 13:57:36,169 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 13:57:36,169 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 13:57:36,169 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-12-07 13:57:36,170 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 13:57:36,170 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:57:36,170 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:57:36,170 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 13:57:36,171 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 13:57:36,175 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L18-2true [2019-12-07 13:57:36,175 INFO L796 eck$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 [2019-12-07 13:57:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:36,179 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 13:57:36,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:36,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041829645] [2019-12-07 13:57:36,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,248 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:36,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:36,249 INFO L82 PathProgramCache]: Analyzing trace with hash 39827, now seen corresponding path program 1 times [2019-12-07 13:57:36,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:36,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781635557] [2019-12-07 13:57:36,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,259 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:36,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:36,260 INFO L82 PathProgramCache]: Analyzing trace with hash 963348, now seen corresponding path program 1 times [2019-12-07 13:57:36,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:36,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919035854] [2019-12-07 13:57:36,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,268 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:36,309 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:57:36,309 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:57:36,309 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:57:36,309 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:57:36,309 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 13:57:36,309 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,309 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:57:36,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:57:36,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2019-12-07 13:57:36,310 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:57:36,310 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:57:36,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,377 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:57:36,377 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:57:36,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:57:36,390 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:57:36,391 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_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:57:36,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:57:36,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:57:36,399 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_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:57:36,403 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 13:57:36,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:57:36,417 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 13:57:36,418 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:57:36,418 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:57:36,418 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:57:36,418 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:57:36,419 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 13:57:36,419 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,419 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:57:36,419 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:57:36,419 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2019-12-07 13:57:36,419 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:57:36,419 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:57:36,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,459 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:57:36,462 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,466 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:57:36,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:57:36,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:57:36,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:57:36,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:57:36,472 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 13:57:36,472 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 13:57:36,476 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,480 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:57:36,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:57:36,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:57:36,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:57:36,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:57:36,484 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 13:57:36,484 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 13:57:36,487 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,491 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:57:36,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:57:36,492 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 13:57:36,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:57:36,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:57:36,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:57:36,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 13:57:36,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 13:57:36,496 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 13:57:36,499 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 13:57:36,499 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_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,503 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 13:57:36,503 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 13:57:36,503 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 13:57:36,504 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 13:57:36,508 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 13:57:36,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:36,534 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:57:36,535 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:57:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:36,540 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:57:36,541 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:57:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:57:36,573 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 13:57:36,574 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 4 states. [2019-12-07 13:57:36,612 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. [2019-12-07 13:57:36,613 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 [2019-12-07 13:57:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 13:57:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-12-07 13:57:36,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2019-12-07 13:57:36,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:36,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 13:57:36,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:36,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2019-12-07 13:57:36,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:36,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 45 transitions. [2019-12-07 13:57:36,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 13:57:36,622 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 14 states and 20 transitions. [2019-12-07 13:57:36,623 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 13:57:36,623 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 13:57:36,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-12-07 13:57:36,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 13:57:36,624 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-12-07 13:57:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-12-07 13:57:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-12-07 13:57:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 13:57:36,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-12-07 13:57:36,642 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-12-07 13:57:36,642 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-12-07 13:57:36,642 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 13:57:36,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-12-07 13:57:36,643 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 13:57:36,643 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:57:36,643 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:57:36,643 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 13:57:36,643 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 13:57:36,643 INFO L794 eck$LassoCheckResult]: Stem: 85#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 86#L18-2 assume !!(0 != main_~i~0); 79#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 80#L18 [2019-12-07 13:57:36,644 INFO L796 eck$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 [2019-12-07 13:57:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:36,644 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 1 times [2019-12-07 13:57:36,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:36,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261484860] [2019-12-07 13:57:36,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,649 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:36,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:36,650 INFO L82 PathProgramCache]: Analyzing trace with hash 57996, now seen corresponding path program 1 times [2019-12-07 13:57:36,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:36,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952109294] [2019-12-07 13:57:36,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:57:36,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952109294] [2019-12-07 13:57:36,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:57:36,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:57:36,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924805897] [2019-12-07 13:57:36,677 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 13:57:36,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:57:36,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:57:36,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:57:36,680 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 13:57:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:57:36,693 INFO L93 Difference]: Finished difference Result 14 states and 20 transitions. [2019-12-07 13:57:36,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:57:36,694 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 20 transitions. [2019-12-07 13:57:36,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 13:57:36,696 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 20 transitions. [2019-12-07 13:57:36,696 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 13:57:36,696 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 13:57:36,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-12-07 13:57:36,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 13:57:36,696 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-12-07 13:57:36,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-12-07 13:57:36,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 13:57:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 13:57:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-12-07 13:57:36,698 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-12-07 13:57:36,698 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-12-07 13:57:36,698 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 13:57:36,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-12-07 13:57:36,699 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 13:57:36,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:57:36,699 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:57:36,700 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 13:57:36,700 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 13:57:36,700 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 [2019-12-07 13:57:36,700 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 [2019-12-07 13:57:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:36,700 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 2 times [2019-12-07 13:57:36,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:36,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083763711] [2019-12-07 13:57:36,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,707 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:36,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:36,708 INFO L82 PathProgramCache]: Analyzing trace with hash 59918, now seen corresponding path program 1 times [2019-12-07 13:57:36,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:36,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009154142] [2019-12-07 13:57:36,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:57:36,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009154142] [2019-12-07 13:57:36,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:57:36,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:57:36,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258405000] [2019-12-07 13:57:36,722 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 13:57:36,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:57:36,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:57:36,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:57:36,723 INFO L87 Difference]: Start difference. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-12-07 13:57:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:57:36,739 INFO L93 Difference]: Finished difference Result 16 states and 22 transitions. [2019-12-07 13:57:36,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:57:36,740 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2019-12-07 13:57:36,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 13:57:36,741 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 22 transitions. [2019-12-07 13:57:36,741 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 13:57:36,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-12-07 13:57:36,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2019-12-07 13:57:36,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 13:57:36,742 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2019-12-07 13:57:36,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2019-12-07 13:57:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-12-07 13:57:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 13:57:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-12-07 13:57:36,744 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-12-07 13:57:36,744 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-12-07 13:57:36,744 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 13:57:36,744 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-12-07 13:57:36,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 13:57:36,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:57:36,745 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:57:36,745 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 13:57:36,746 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2019-12-07 13:57:36,746 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 153#L18-2 assume !!(0 != main_~i~0); 148#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 149#L18 [2019-12-07 13:57:36,746 INFO L796 eck$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 [2019-12-07 13:57:36,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:36,746 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 3 times [2019-12-07 13:57:36,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:36,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187262430] [2019-12-07 13:57:36,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,752 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:36,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:36,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1727393992, now seen corresponding path program 1 times [2019-12-07 13:57:36,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:36,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535808293] [2019-12-07 13:57:36,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,761 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:36,762 INFO L82 PathProgramCache]: Analyzing trace with hash 684415735, now seen corresponding path program 1 times [2019-12-07 13:57:36,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:36,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360415544] [2019-12-07 13:57:36,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:36,772 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:36,809 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:57:36,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:57:36,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:57:36,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:57:36,810 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 13:57:36,810 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:57:36,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:57:36,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration4_Loop [2019-12-07 13:57:36,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:57:36,810 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:57:36,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,871 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:57:36,871 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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 [2019-12-07 13:57:36,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:57:36,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:57:36,880 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:57:36,880 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_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:57:36,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:57:36,891 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:57:36,891 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_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:57:36,895 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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 [2019-12-07 13:57:36,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 13:57:36,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:57:36,909 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 13:57:36,910 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:57:36,910 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:57:36,911 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:57:36,911 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:57:36,911 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 13:57:36,911 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,911 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:57:36,911 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:57:36,911 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration4_Loop [2019-12-07 13:57:36,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:57:36,912 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:57:36,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:36,966 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:57:36,966 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,969 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:57:36,970 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:57:36,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:57:36,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:57:36,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:57:36,973 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 13:57:36,973 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 13:57:36,976 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,985 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:57:36,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:57:36,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 13:57:36,987 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:57:36,987 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:57:36,987 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:57:36,988 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 13:57:36,988 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 13:57:36,990 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 13:57:36,992 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 13:57:36,992 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_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:36,995 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 13:57:36,995 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 13:57:36,995 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 13:57:36,995 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 13:57:36,997 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 13:57:37,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:37,015 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:57:37,015 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:57:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:37,020 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 13:57:37,021 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:57:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:57:37,036 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 [2019-12-07 13:57:37,036 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-12-07 13:57:37,049 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. [2019-12-07 13:57:37,050 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 [2019-12-07 13:57:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 13:57:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-12-07 13:57:37,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-12-07 13:57:37,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:37,051 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 13:57:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:37,063 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:57:37,063 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:57:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:37,067 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 13:57:37,067 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:57:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:57:37,082 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 [2019-12-07 13:57:37,082 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-12-07 13:57:37,116 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. [2019-12-07 13:57:37,116 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 [2019-12-07 13:57:37,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 13:57:37,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-12-07 13:57:37,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 3 letters. Loop has 6 letters. [2019-12-07 13:57:37,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:37,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 9 letters. Loop has 6 letters. [2019-12-07 13:57:37,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:37,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 3 letters. Loop has 12 letters. [2019-12-07 13:57:37,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:37,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 63 transitions. [2019-12-07 13:57:37,120 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2019-12-07 13:57:37,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 41 states and 60 transitions. [2019-12-07 13:57:37,121 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-12-07 13:57:37,121 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-12-07 13:57:37,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 60 transitions. [2019-12-07 13:57:37,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 13:57:37,122 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 60 transitions. [2019-12-07 13:57:37,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 60 transitions. [2019-12-07 13:57:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2019-12-07 13:57:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 13:57:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 55 transitions. [2019-12-07 13:57:37,125 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 55 transitions. [2019-12-07 13:57:37,125 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 55 transitions. [2019-12-07 13:57:37,125 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 13:57:37,125 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 55 transitions. [2019-12-07 13:57:37,126 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2019-12-07 13:57:37,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:57:37,126 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:57:37,126 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 13:57:37,126 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 13:57:37,127 INFO L794 eck$LassoCheckResult]: Stem: 323#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 324#L18-2 assume !!(0 != main_~i~0); 321#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 322#L12 assume main_~i~0 < 0; 328#L13 [2019-12-07 13:57:37,127 INFO L796 eck$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 [2019-12-07 13:57:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2019-12-07 13:57:37,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:37,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833940243] [2019-12-07 13:57:37,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,133 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:37,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1559161, now seen corresponding path program 1 times [2019-12-07 13:57:37,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:37,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130541597] [2019-12-07 13:57:37,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,139 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:37,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,140 INFO L82 PathProgramCache]: Analyzing trace with hash 608049029, now seen corresponding path program 1 times [2019-12-07 13:57:37,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:37,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088840112] [2019-12-07 13:57:37,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:57:37,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088840112] [2019-12-07 13:57:37,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:57:37,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:57:37,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429944491] [2019-12-07 13:57:37,177 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:57:37,177 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:57:37,177 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:57:37,177 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:57:37,177 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 13:57:37,177 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,177 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:57:37,177 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:57:37,177 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration5_Loop [2019-12-07 13:57:37,177 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:57:37,177 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:57:37,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,213 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:57:37,213 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:57:37,216 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:57:37,219 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:57:37,219 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_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:57:37,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:57:37,227 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:57:37,227 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_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:57:37,231 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 13:57:37,237 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:57:37,287 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 13:57:37,288 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:57:37,289 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:57:37,289 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:57:37,289 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:57:37,289 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 13:57:37,289 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,289 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:57:37,289 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:57:37,289 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration5_Loop [2019-12-07 13:57:37,289 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:57:37,289 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:57:37,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,321 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:57:37,321 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,330 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:57:37,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:57:37,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:57:37,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:57:37,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:57:37,333 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 13:57:37,333 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 13:57:37,335 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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 [2019-12-07 13:57:37,340 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:57:37,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:57:37,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:57:37,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:57:37,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:57:37,343 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 13:57:37,343 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 13:57:37,345 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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 [2019-12-07 13:57:37,350 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:57:37,351 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:57:37,351 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 13:57:37,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:57:37,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:57:37,351 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:57:37,352 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 13:57:37,352 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 13:57:37,354 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 13:57:37,356 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 13:57:37,356 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_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,358 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 13:57:37,358 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 13:57:37,359 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 13:57:37,359 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 13:57:37,360 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 13:57:37,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:37,371 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:57:37,372 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:57:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:37,375 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 13:57:37,375 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:57:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:57:37,387 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 [2019-12-07 13:57:37,387 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 55 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-12-07 13:57:37,435 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. [2019-12-07 13:57:37,435 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 [2019-12-07 13:57:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 13:57:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 26 transitions. [2019-12-07 13:57:37,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 13:57:37,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:37,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 8 letters. Loop has 4 letters. [2019-12-07 13:57:37,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:37,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 4 letters. Loop has 8 letters. [2019-12-07 13:57:37,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:37,436 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 147 states and 212 transitions. [2019-12-07 13:57:37,439 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 23 [2019-12-07 13:57:37,441 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 147 states to 121 states and 178 transitions. [2019-12-07 13:57:37,441 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-12-07 13:57:37,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-12-07 13:57:37,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 178 transitions. [2019-12-07 13:57:37,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 13:57:37,441 INFO L688 BuchiCegarLoop]: Abstraction has 121 states and 178 transitions. [2019-12-07 13:57:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 178 transitions. [2019-12-07 13:57:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 101. [2019-12-07 13:57:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-12-07 13:57:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions. [2019-12-07 13:57:37,447 INFO L711 BuchiCegarLoop]: Abstraction has 101 states and 153 transitions. [2019-12-07 13:57:37,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:57:37,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:57:37,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:57:37,448 INFO L87 Difference]: Start difference. First operand 101 states and 153 transitions. Second operand 4 states. [2019-12-07 13:57:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:57:37,463 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2019-12-07 13:57:37,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:57:37,464 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 105 transitions. [2019-12-07 13:57:37,465 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 31 [2019-12-07 13:57:37,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 72 states and 97 transitions. [2019-12-07 13:57:37,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2019-12-07 13:57:37,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2019-12-07 13:57:37,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 97 transitions. [2019-12-07 13:57:37,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 13:57:37,467 INFO L688 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2019-12-07 13:57:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 97 transitions. [2019-12-07 13:57:37,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 35. [2019-12-07 13:57:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 13:57:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-12-07 13:57:37,470 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-12-07 13:57:37,470 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-12-07 13:57:37,470 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 13:57:37,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2019-12-07 13:57:37,471 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2019-12-07 13:57:37,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:57:37,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:57:37,471 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 13:57:37,471 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 13:57:37,472 INFO L794 eck$LassoCheckResult]: Stem: 746#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 747#L18-2 assume !!(0 != main_~i~0); 766#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 768#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 753#L18-2 [2019-12-07 13:57:37,472 INFO L796 eck$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 [2019-12-07 13:57:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,472 INFO L82 PathProgramCache]: Analyzing trace with hash 963757, now seen corresponding path program 1 times [2019-12-07 13:57:37,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:37,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555001047] [2019-12-07 13:57:37,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,478 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,478 INFO L82 PathProgramCache]: Analyzing trace with hash 39827, now seen corresponding path program 2 times [2019-12-07 13:57:37,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:37,479 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772964551] [2019-12-07 13:57:37,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,483 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:37,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1353476249, now seen corresponding path program 2 times [2019-12-07 13:57:37,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:37,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320882747] [2019-12-07 13:57:37,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,490 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:37,503 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:57:37,503 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:57:37,503 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:57:37,503 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:57:37,503 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 13:57:37,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,503 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:57:37,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:57:37,503 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration6_Loop [2019-12-07 13:57:37,503 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:57:37,503 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:57:37,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,531 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:57:37,531 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:57:37,535 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 13:57:37,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:57:37,547 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 13:57:37,548 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:57:37,548 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:57:37,548 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:57:37,548 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:57:37,548 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 13:57:37,548 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,548 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:57:37,548 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:57:37,548 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration6_Loop [2019-12-07 13:57:37,548 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:57:37,548 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:57:37,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:57:37,578 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:57:37,579 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,581 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:57:37,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:57:37,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 13:57:37,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:57:37,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:57:37,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:57:37,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 13:57:37,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 13:57:37,585 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 13:57:37,587 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 13:57:37,587 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_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/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) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:57:37,590 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 13:57:37,590 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 13:57:37,590 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 13:57:37,590 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 13:57:37,591 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 13:57:37,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:37,602 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:57:37,602 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:57:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:57:37,604 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:57:37,604 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:57:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:57:37,611 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 13:57:37,612 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 4 states. [2019-12-07 13:57:37,623 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. [2019-12-07 13:57:37,623 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 [2019-12-07 13:57:37,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 13:57:37,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2019-12-07 13:57:37,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 13:57:37,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:37,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2019-12-07 13:57:37,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:37,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-12-07 13:57:37,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:57:37,624 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 96 transitions. [2019-12-07 13:57:37,625 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-12-07 13:57:37,626 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 65 states and 88 transitions. [2019-12-07 13:57:37,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-12-07 13:57:37,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2019-12-07 13:57:37,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 88 transitions. [2019-12-07 13:57:37,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 13:57:37,626 INFO L688 BuchiCegarLoop]: Abstraction has 65 states and 88 transitions. [2019-12-07 13:57:37,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 88 transitions. [2019-12-07 13:57:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2019-12-07 13:57:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-12-07 13:57:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2019-12-07 13:57:37,630 INFO L711 BuchiCegarLoop]: Abstraction has 57 states and 80 transitions. [2019-12-07 13:57:37,630 INFO L591 BuchiCegarLoop]: Abstraction has 57 states and 80 transitions. [2019-12-07 13:57:37,630 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 13:57:37,630 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 80 transitions. [2019-12-07 13:57:37,630 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-12-07 13:57:37,630 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:57:37,630 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:57:37,631 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 13:57:37,631 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2019-12-07 13:57:37,631 INFO L794 eck$LassoCheckResult]: Stem: 896#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 897#L18-2 assume !!(0 != main_~i~0); 927#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 925#L18 assume !(main_~i~0 > 0); 908#L18-2 [2019-12-07 13:57:37,631 INFO L796 eck$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 [2019-12-07 13:57:37,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,631 INFO L82 PathProgramCache]: Analyzing trace with hash 963759, now seen corresponding path program 1 times [2019-12-07 13:57:37,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:37,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470285678] [2019-12-07 13:57:37,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,635 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:37,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1186496604, now seen corresponding path program 1 times [2019-12-07 13:57:37,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:37,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229872122] [2019-12-07 13:57:37,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,640 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:57:37,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1517058698, now seen corresponding path program 1 times [2019-12-07 13:57:37,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:57:37,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009856738] [2019-12-07 13:57:37,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:57:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:57:37,646 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:57:37,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 01:57:37 BoogieIcfgContainer [2019-12-07 13:57:37,693 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 13:57:37,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:57:37,693 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:57:37,694 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:57:37,694 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:57:36" (3/4) ... [2019-12-07 13:57:37,696 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-12-07 13:57:37,727 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_52a87cdd-e5ef-49e4-85c6-c78ea2be34d6/bin/uautomizer/witness.graphml [2019-12-07 13:57:37,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:57:37,729 INFO L168 Benchmark]: Toolchain (without parser) took 1976.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Free memory was 948.9 MB in the beginning and 980.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 61.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:57:37,729 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:57:37,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -140.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 13:57:37,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.39 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:57:37,730 INFO L168 Benchmark]: Boogie Preprocessor took 12.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:57:37,730 INFO L168 Benchmark]: RCFGBuilder took 137.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:57:37,730 INFO L168 Benchmark]: BuchiAutomizer took 1585.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 981.8 MB in the end (delta: 87.8 MB). Peak memory consumption was 87.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:57:37,731 INFO L168 Benchmark]: Witness Printer took 33.41 ms. Allocated memory is still 1.1 GB. Free memory was 981.8 MB in the beginning and 980.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:57:37,733 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.8 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -140.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.39 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 137.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1585.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 981.8 MB in the end (delta: 87.8 MB). Peak memory consumption was 87.8 MB. Max. memory is 11.5 GB. * Witness Printer took 33.41 ms. Allocated memory is still 1.1 GB. Free memory was 981.8 MB in the beginning and 980.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 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 1.5s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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, 0.0s 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: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - 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@5e171c2d=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...