./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/terminator_02-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/terminator_02-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 32bit --witnessprinter.graph.data.programhash 373a42d768821561cf3a59e950efa4caf2842fe4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:06:28,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:06:28,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:06:28,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:06:28,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:06:28,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:06:28,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:06:28,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:06:28,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:06:28,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:06:28,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:06:28,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:06:28,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:06:28,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:06:28,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:06:28,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:06:28,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:06:28,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:06:28,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:06:28,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:06:28,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:06:28,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:06:28,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:06:28,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:06:28,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:06:28,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:06:28,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:06:28,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:06:28,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:06:28,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:06:28,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:06:28,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:06:28,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:06:28,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:06:28,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:06:28,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:06:28,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:06:28,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:06:28,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:06:28,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:06:28,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:06:28,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 12:06:28,176 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:06:28,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:06:28,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:06:28,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:06:28,178 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:06:28,178 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 12:06:28,178 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 12:06:28,178 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 12:06:28,178 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 12:06:28,178 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 12:06:28,178 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 12:06:28,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:06:28,179 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:06:28,179 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 12:06:28,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:06:28,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:06:28,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:06:28,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 12:06:28,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 12:06:28,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 12:06:28,180 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:06:28,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:06:28,180 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 12:06:28,180 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:06:28,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 12:06:28,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:06:28,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:06:28,180 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 12:06:28,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:06:28,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:06:28,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:06:28,181 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 12:06:28,181 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 12:06:28,182 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_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 373a42d768821561cf3a59e950efa4caf2842fe4 [2019-12-07 12:06:28,280 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:06:28,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:06:28,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:06:28,294 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:06:28,295 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:06:28,295 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/../../sv-benchmarks/c/loops/terminator_02-1.c [2019-12-07 12:06:28,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/data/be0678540/b022df3e8f2340bb89d225f1f4844720/FLAG6e2f3ab97 [2019-12-07 12:06:28,653 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:06:28,654 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/sv-benchmarks/c/loops/terminator_02-1.c [2019-12-07 12:06:28,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/data/be0678540/b022df3e8f2340bb89d225f1f4844720/FLAG6e2f3ab97 [2019-12-07 12:06:28,667 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/data/be0678540/b022df3e8f2340bb89d225f1f4844720 [2019-12-07 12:06:28,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:06:28,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:06:28,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:06:28,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:06:28,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:06:28,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:06:28" (1/1) ... [2019-12-07 12:06:28,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2587198c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28, skipping insertion in model container [2019-12-07 12:06:28,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:06:28" (1/1) ... [2019-12-07 12:06:28,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:06:28,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:06:28,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:06:28,796 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:06:28,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:06:28,850 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:06:28,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28 WrapperNode [2019-12-07 12:06:28,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:06:28,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:06:28,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:06:28,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:06:28,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28" (1/1) ... [2019-12-07 12:06:28,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28" (1/1) ... [2019-12-07 12:06:28,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:06:28,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:06:28,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:06:28,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:06:28,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28" (1/1) ... [2019-12-07 12:06:28,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28" (1/1) ... [2019-12-07 12:06:28,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28" (1/1) ... [2019-12-07 12:06:28,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28" (1/1) ... [2019-12-07 12:06:28,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28" (1/1) ... [2019-12-07 12:06:28,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28" (1/1) ... [2019-12-07 12:06:28,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28" (1/1) ... [2019-12-07 12:06:28,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:06:28,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:06:28,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:06:28,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:06:28,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:06:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:06:29,022 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:06:29,022 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 12:06:29,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:06:29 BoogieIcfgContainer [2019-12-07 12:06:29,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:06:29,023 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 12:06:29,023 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 12:06:29,025 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 12:06:29,026 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:06:29,026 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 12:06:28" (1/3) ... [2019-12-07 12:06:29,026 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d839e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:06:29, skipping insertion in model container [2019-12-07 12:06:29,026 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:06:29,027 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:06:28" (2/3) ... [2019-12-07 12:06:29,027 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d839e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:06:29, skipping insertion in model container [2019-12-07 12:06:29,027 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:06:29,027 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:06:29" (3/3) ... [2019-12-07 12:06:29,028 INFO L371 chiAutomizerObserver]: Analyzing ICFG terminator_02-1.c [2019-12-07 12:06:29,056 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 12:06:29,056 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 12:06:29,056 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 12:06:29,056 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:06:29,057 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:06:29,057 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 12:06:29,057 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:06:29,057 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 12:06:29,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-12-07 12:06:29,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:06:29,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:06:29,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:06:29,082 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:06:29,082 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 12:06:29,082 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 12:06:29,082 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-12-07 12:06:29,083 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:06:29,083 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:06:29,083 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:06:29,083 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:06:29,083 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 12:06:29,088 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L21-2true [2019-12-07 12:06:29,088 INFO L796 eck$LassoCheckResult]: Loop: 10#L21-2true assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L21true assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 10#L21-2true [2019-12-07 12:06:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:29,092 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 12:06:29,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:29,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073055222] [2019-12-07 12:06:29,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,159 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:29,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-12-07 12:06:29,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:29,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238715151] [2019-12-07 12:06:29,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,175 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:29,176 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-12-07 12:06:29,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:29,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698169591] [2019-12-07 12:06:29,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,186 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:29,223 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:06:29,223 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:06:29,223 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:06:29,223 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:06:29,223 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:06:29,224 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:06:29,224 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:06:29,224 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:06:29,224 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2019-12-07 12:06:29,224 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:06:29,224 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:06:29,238 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 12:06:29,244 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 12:06:29,250 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 12:06:29,256 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 12:06:29,328 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:06:29,328 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:06:29,333 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:06:29,339 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:06:29,340 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0=101} Honda state: {ULTIMATE.start_main_~z~0=101} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:06:29,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:06:29,354 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:06:29,354 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=-217, ULTIMATE.start_main_#t~nondet3=-217} Honda state: {ULTIMATE.start_main_~tmp~0=-217, ULTIMATE.start_main_#t~nondet3=-217} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:06:29,358 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:06:29,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:06:29,371 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:06:29,372 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:06:29,372 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:06:29,372 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:06:29,372 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:06:29,373 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:06:29,373 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:06:29,373 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:06:29,373 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:06:29,373 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2019-12-07 12:06:29,373 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:06:29,373 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:06:29,374 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 12:06:29,377 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 12:06:29,382 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 12:06:29,386 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 12:06:29,443 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:06:29,448 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,452 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 12:06:29,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:06:29,453 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:06:29,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:06:29,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:06:29,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:06:29,456 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:06:29,456 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:06:29,457 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,461 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 12:06:29,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:06:29,463 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:06:29,463 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:06:29,463 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:06:29,463 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:06:29,464 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:06:29,464 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:06:29,466 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:06:29,469 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:06:29,470 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,475 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:06:29,475 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:06:29,475 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:06:29,476 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-12-07 12:06:29,479 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:06:29,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:29,505 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:06:29,506 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:29,513 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:06:29,513 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:29,523 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 12:06:29,533 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 12:06:29,534 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-12-07 12:06:29,569 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 35 states and 45 transitions. Complement of second has 8 states. [2019-12-07 12:06:29,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:06:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:06:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-12-07 12:06:29,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2019-12-07 12:06:29,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:29,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 12:06:29,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:29,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 12:06:29,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:29,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 45 transitions. [2019-12-07 12:06:29,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:06:29,580 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 7 states and 10 transitions. [2019-12-07 12:06:29,580 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 12:06:29,581 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 12:06:29,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-12-07 12:06:29,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:06:29,581 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 12:06:29,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-12-07 12:06:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-12-07 12:06:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 12:06:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-12-07 12:06:29,599 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 12:06:29,599 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 12:06:29,599 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 12:06:29,599 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-12-07 12:06:29,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:06:29,599 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:06:29,600 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:06:29,600 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 12:06:29,600 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 12:06:29,600 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 87#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 82#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 83#L21-2 [2019-12-07 12:06:29,600 INFO L796 eck$LassoCheckResult]: Loop: 83#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 88#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 83#L21-2 [2019-12-07 12:06:29,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:29,600 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-12-07 12:06:29,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:29,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9930493] [2019-12-07 12:06:29,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,613 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:29,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:29,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-12-07 12:06:29,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:29,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661201206] [2019-12-07 12:06:29,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,621 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:29,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:29,621 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-12-07 12:06:29,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:29,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605495871] [2019-12-07 12:06:29,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,635 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:29,649 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:06:29,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:06:29,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:06:29,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:06:29,650 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:06:29,650 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:06:29,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:06:29,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:06:29,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2019-12-07 12:06:29,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:06:29,650 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:06:29,651 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 12:06:29,657 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 12:06:29,660 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 12:06:29,662 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 12:06:29,714 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:06:29,715 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:06:29,719 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:06:29,728 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:06:29,728 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=128, ULTIMATE.start_main_#t~nondet3=128} Honda state: {ULTIMATE.start_main_~tmp~0=128, ULTIMATE.start_main_#t~nondet3=128} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:06:29,732 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:06:29,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:06:29,745 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:06:29,747 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:06:29,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:06:29,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:06:29,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:06:29,747 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:06:29,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:06:29,747 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:06:29,747 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:06:29,747 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2019-12-07 12:06:29,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:06:29,748 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:06:29,748 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 12:06:29,753 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 12:06:29,755 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 12:06:29,757 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 12:06:29,807 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:06:29,807 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,810 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 12:06:29,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:06:29,811 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:06:29,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:06:29,811 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:06:29,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:06:29,812 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:06:29,812 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:06:29,814 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:06:29,816 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:06:29,816 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,818 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:06:29,819 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:06:29,819 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:06:29,819 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-12-07 12:06:29,820 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:06:29,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:29,836 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:06:29,837 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:29,840 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:06:29,841 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:29,848 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 12:06:29,849 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 12:06:29,849 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 12:06:29,858 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-12-07 12:06:29,859 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 12:06:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:06:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 12:06:29,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 12:06:29,860 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:29,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 12:06:29,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:29,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-12-07 12:06:29,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:29,861 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-12-07 12:06:29,862 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:06:29,862 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-12-07 12:06:29,862 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 12:06:29,863 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 12:06:29,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-12-07 12:06:29,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:06:29,863 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-12-07 12:06:29,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-12-07 12:06:29,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 12:06:29,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 12:06:29,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-12-07 12:06:29,865 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-12-07 12:06:29,865 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-12-07 12:06:29,865 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 12:06:29,865 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-12-07 12:06:29,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:06:29,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:06:29,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:06:29,866 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-12-07 12:06:29,866 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 12:06:29,867 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 141#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 136#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 137#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 144#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 142#L21-2 [2019-12-07 12:06:29,867 INFO L796 eck$LassoCheckResult]: Loop: 142#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 143#L21 assume 0 != main_~tmp~0 % 256;main_#t~post4 := main_~x~0;main_~x~0 := 1 + main_#t~post4;havoc main_#t~post4; 142#L21-2 [2019-12-07 12:06:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:29,867 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2019-12-07 12:06:29,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:29,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091829419] [2019-12-07 12:06:29,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,883 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:29,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:29,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2019-12-07 12:06:29,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:29,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124871175] [2019-12-07 12:06:29,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,891 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:29,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2019-12-07 12:06:29,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:29,892 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328145550] [2019-12-07 12:06:29,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:29,911 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:29,928 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:06:29,928 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:06:29,928 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:06:29,928 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:06:29,929 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:06:29,929 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:06:29,929 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:06:29,929 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:06:29,929 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2019-12-07 12:06:29,929 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:06:29,929 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:06:29,930 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 12:06:29,936 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 12:06:29,938 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 12:06:29,943 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 12:06:29,989 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:06:29,989 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:06:29,992 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:29,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:06:29,998 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:06:30,007 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:06:30,008 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:06:30,008 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:06:30,008 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:06:30,008 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:06:30,008 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:06:30,008 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:06:30,008 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:06:30,009 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:06:30,009 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2019-12-07 12:06:30,009 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:06:30,009 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:06:30,010 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 12:06:30,014 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 12:06:30,015 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 12:06:30,017 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 12:06:30,070 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:06:30,071 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,074 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 12:06:30,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:06:30,075 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:06:30,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:06:30,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:06:30,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:06:30,077 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:06:30,077 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:06:30,079 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:06:30,082 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:06:30,082 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,085 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:06:30,085 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:06:30,085 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:06:30,085 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-12-07 12:06:30,086 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:06:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:30,103 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:06:30,103 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:30,107 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:06:30,107 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:30,114 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 12:06:30,114 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 12:06:30,114 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 12:06:30,123 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-12-07 12:06:30,124 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 12:06:30,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:06:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 12:06:30,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 12:06:30,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:30,124 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:06:30,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:30,139 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:06:30,139 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:30,142 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:06:30,143 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:30,150 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 12:06:30,150 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 12:06:30,150 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 12:06:30,157 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-12-07 12:06:30,157 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 12:06:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:06:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 12:06:30,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 12:06:30,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:30,158 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:06:30,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:30,172 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:06:30,172 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:30,175 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:06:30,176 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:30,182 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 12:06:30,183 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 12:06:30,183 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 12:06:30,191 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2019-12-07 12:06:30,191 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 12:06:30,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:06:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 12:06:30,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 12:06:30,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:30,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2019-12-07 12:06:30,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:30,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 12:06:30,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:30,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2019-12-07 12:06:30,193 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 12:06:30,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2019-12-07 12:06:30,194 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 12:06:30,194 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 12:06:30,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-12-07 12:06:30,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:06:30,194 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-12-07 12:06:30,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-12-07 12:06:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2019-12-07 12:06:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 12:06:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-12-07 12:06:30,195 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-12-07 12:06:30,201 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-12-07 12:06:30,201 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 12:06:30,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-12-07 12:06:30,201 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 12:06:30,201 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:06:30,201 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:06:30,201 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:06:30,201 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 12:06:30,202 INFO L794 eck$LassoCheckResult]: Stem: 287#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 284#L21-2 [2019-12-07 12:06:30,202 INFO L796 eck$LassoCheckResult]: Loop: 284#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 283#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 284#L21-2 [2019-12-07 12:06:30,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:30,202 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-12-07 12:06:30,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:30,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102990199] [2019-12-07 12:06:30,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:30,206 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:30,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:30,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2019-12-07 12:06:30,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:30,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453219666] [2019-12-07 12:06:30,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:30,211 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:30,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2019-12-07 12:06:30,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:06:30,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547751443] [2019-12-07 12:06:30,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:06:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:06:30,218 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:06:30,233 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:06:30,233 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:06:30,233 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:06:30,233 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:06:30,233 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:06:30,233 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:06:30,233 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:06:30,233 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:06:30,234 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration4_Loop [2019-12-07 12:06:30,234 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:06:30,234 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:06:30,234 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 12:06:30,236 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 12:06:30,237 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 12:06:30,241 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 12:06:30,244 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 12:06:30,289 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:06:30,289 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:06:30,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:06:30,295 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:06:30,295 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:06:30,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:06:30,300 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:06:30,301 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:06:30,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:06:30,311 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:06:30,311 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=0, ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_~tmp~0=0, ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:06:30,315 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,322 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:06:30,322 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:06:30,332 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:06:30,332 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=99} Honda state: {ULTIMATE.start_main_~x~0=99} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 4, 13] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:06:30,336 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:06:30,342 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:06:30,347 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:06:30,348 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:06:30,348 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:06:30,348 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:06:30,348 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:06:30,348 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:06:30,348 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:06:30,348 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:06:30,348 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:06:30,348 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration4_Loop [2019-12-07 12:06:30,348 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:06:30,349 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:06:30,349 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 12:06:30,351 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 12:06:30,352 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 12:06:30,355 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 12:06:30,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:06:30,404 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:06:30,404 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,407 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 12:06:30,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:06:30,408 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:06:30,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:06:30,409 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:06:30,409 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:06:30,409 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:06:30,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:06:30,410 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,414 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 12:06:30,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:06:30,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:06:30,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:06:30,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:06:30,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:06:30,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:06:30,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:06:30,417 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,421 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 12:06:30,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:06:30,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:06:30,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:06:30,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:06:30,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:06:30,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:06:30,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:06:30,424 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/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 12:06:30,428 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 12:06:30,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:06:30,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:06:30,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:06:30,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:06:30,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:06:30,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:06:30,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:06:30,432 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:06:30,436 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 12:06:30,437 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:06:30,437 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:06:30,437 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:06:30,437 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:06:30,437 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:06:30,438 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:06:30,438 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:06:30,440 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:06:30,442 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:06:30,442 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6d5ec00-0464-4e35-ade8-bc707e55332b/bin/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:06:30,444 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:06:30,444 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:06:30,444 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:06:30,444 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-12-07 12:06:30,446 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:06:30,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:06:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:30,458 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:06:30,458 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:06:30,461 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:06:30,461 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:06:30,468 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 12:06:30,468 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 12:06:30,468 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-12-07 12:06:30,476 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2019-12-07 12:06:30,477 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 12:06:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:06:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 12:06:30,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2019-12-07 12:06:30,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:30,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 12:06:30,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:30,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 12:06:30,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:06:30,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2019-12-07 12:06:30,478 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 12:06:30,478 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2019-12-07 12:06:30,478 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 12:06:30,478 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 12:06:30,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 12:06:30,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:06:30,479 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:06:30,479 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:06:30,479 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:06:30,479 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 12:06:30,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:06:30,479 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 12:06:30,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 12:06:30,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 12:06:30 BoogieIcfgContainer [2019-12-07 12:06:30,485 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 12:06:30,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:06:30,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:06:30,486 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:06:30,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:06:29" (3/4) ... [2019-12-07 12:06:30,489 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:06:30,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:06:30,491 INFO L168 Benchmark]: Toolchain (without parser) took 1819.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 940.3 MB in the beginning and 995.4 MB in the end (delta: -55.1 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:06:30,491 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:06:30,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -152.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:06:30,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.56 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:06:30,493 INFO L168 Benchmark]: Boogie Preprocessor took 11.46 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:06:30,493 INFO L168 Benchmark]: RCFGBuilder took 138.32 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:06:30,494 INFO L168 Benchmark]: BuchiAutomizer took 1461.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 995.4 MB in the end (delta: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:06:30,494 INFO L168 Benchmark]: Witness Printer took 3.62 ms. Allocated memory is still 1.1 GB. Free memory is still 995.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:06:30,497 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 179.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -152.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.56 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.46 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 138.32 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1461.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 995.4 MB in the end (delta: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.62 ms. Allocated memory is still 1.1 GB. Free memory is still 995.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 199 and consists of 5 locations. One deterministic module has affine ranking function -2 * x + 199 and consists of 3 locations. One deterministic module has affine ranking function z and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 199 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 5 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 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 21 SDslu, 13 SDs, 0 SdLazy, 41 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf100 lsp47 ukn100 mio100 lsp100 div444 bol100 ite100 ukn100 eq150 hnf48 smp82 dnf100 smp100 tf106 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...