./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/terminator_02-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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 0.1.24-cad4683 [2019-10-22 08:57:15,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:15,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:15,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:15,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:15,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:15,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:15,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:15,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:15,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:15,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:15,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:15,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:15,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:15,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:15,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:15,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:15,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:15,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:15,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:15,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:15,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:15,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:15,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:15,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:15,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:15,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:15,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:15,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:15,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:15,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:15,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:15,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:15,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:15,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:15,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:15,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:15,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:15,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:15,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:15,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:16,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:57:16,017 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:16,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:16,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:16,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:16,021 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:16,021 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:57:16,022 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:57:16,022 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:57:16,022 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:57:16,022 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:57:16,022 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:57:16,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:16,023 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:16,023 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:57:16,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:16,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:16,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:16,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:57:16,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:57:16,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:57:16,024 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:16,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:16,025 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:57:16,025 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:16,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:57:16,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:16,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:16,026 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:57:16,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:16,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:16,026 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:57:16,027 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:57:16,027 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/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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 [2019-10-22 08:57:16,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:16,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:16,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:16,076 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:16,077 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:16,079 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/../../sv-benchmarks/c/loops/terminator_02-1.c [2019-10-22 08:57:16,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/data/e9c23205d/05adb1fb630148f0a6cf3a0318b635e2/FLAG1dbae591d [2019-10-22 08:57:16,548 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:16,550 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/sv-benchmarks/c/loops/terminator_02-1.c [2019-10-22 08:57:16,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/data/e9c23205d/05adb1fb630148f0a6cf3a0318b635e2/FLAG1dbae591d [2019-10-22 08:57:16,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/data/e9c23205d/05adb1fb630148f0a6cf3a0318b635e2 [2019-10-22 08:57:16,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:16,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:16,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:16,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:16,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:16,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:16" (1/1) ... [2019-10-22 08:57:16,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b18d891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16, skipping insertion in model container [2019-10-22 08:57:16,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:16" (1/1) ... [2019-10-22 08:57:16,588 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:16,604 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:16,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:16,747 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:16,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:16,846 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:16,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16 WrapperNode [2019-10-22 08:57:16,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:16,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:16,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:16,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:16,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16" (1/1) ... [2019-10-22 08:57:16,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16" (1/1) ... [2019-10-22 08:57:16,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:16,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:16,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:16,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:16,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16" (1/1) ... [2019-10-22 08:57:16,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16" (1/1) ... [2019-10-22 08:57:16,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16" (1/1) ... [2019-10-22 08:57:16,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16" (1/1) ... [2019-10-22 08:57:16,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16" (1/1) ... [2019-10-22 08:57:16,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16" (1/1) ... [2019-10-22 08:57:16,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16" (1/1) ... [2019-10-22 08:57:16,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:16,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:16,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:16,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:16,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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 [2019-10-22 08:57:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:16,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:17,178 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:17,179 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:57:17,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:17 BoogieIcfgContainer [2019-10-22 08:57:17,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:17,181 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:57:17,181 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:57:17,186 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:57:17,187 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:57:17,188 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:57:16" (1/3) ... [2019-10-22 08:57:17,189 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41d1d7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:57:17, skipping insertion in model container [2019-10-22 08:57:17,190 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:57:17,190 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:16" (2/3) ... [2019-10-22 08:57:17,190 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41d1d7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:57:17, skipping insertion in model container [2019-10-22 08:57:17,191 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:57:17,191 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:17" (3/3) ... [2019-10-22 08:57:17,193 INFO L371 chiAutomizerObserver]: Analyzing ICFG terminator_02-1.c [2019-10-22 08:57:17,294 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:57:17,295 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:57:17,295 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:57:17,295 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:17,295 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:17,295 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:57:17,295 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:17,296 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:57:17,327 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-10-22 08:57:17,374 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:57:17,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:17,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:17,394 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:57:17,394 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:57:17,394 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:57:17,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-10-22 08:57:17,395 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:57:17,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:17,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:17,396 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:57:17,396 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:57:17,404 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L21-2true [2019-10-22 08:57:17,404 INFO L793 eck$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 [2019-10-22 08:57:17,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:17,428 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:57:17,441 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:17,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185464474] [2019-10-22 08:57:17,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:17,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:17,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:17,540 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:17,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:17,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-10-22 08:57:17,541 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:17,541 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392172479] [2019-10-22 08:57:17,541 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:17,542 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:17,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:17,564 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:17,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:17,565 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-10-22 08:57:17,566 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:17,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695373881] [2019-10-22 08:57:17,566 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:17,566 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:17,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:17,580 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:17,632 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:17,633 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:17,633 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:17,634 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:17,634 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:57:17,634 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:17,634 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:17,634 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:17,634 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2019-10-22 08:57:17,635 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:17,635 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:17,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:17,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:17,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:17,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:17,788 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:17,789 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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 [2019-10-22 08:57:17,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:17,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:17,824 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:17,824 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/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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) [2019-10-22 08:57:17,837 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:17,837 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:17,854 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:17,854 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/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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) [2019-10-22 08:57:17,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:17,863 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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) [2019-10-22 08:57:17,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:17,876 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:17,890 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:57:17,892 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:17,892 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:17,892 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:17,892 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:17,893 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:57:17,893 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:17,893 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:17,893 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:17,893 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2019-10-22 08:57:17,893 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:17,893 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:17,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:17,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:17,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:17,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,019 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:18,025 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:57:18,026 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 [2019-10-22 08:57:18,028 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:18,028 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:18,029 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:18,029 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:18,030 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:18,032 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:18,032 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:18,038 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:57:18,038 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 [2019-10-22 08:57:18,039 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:18,039 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:18,039 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:18,039 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:18,040 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:18,040 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:18,041 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:18,051 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:57:18,056 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:57:18,056 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:57:18,060 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:57:18,060 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:57:18,061 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:57:18,061 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-10-22 08:57:18,064 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:57:18,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:18,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:18,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:18,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:18,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:18,142 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 [2019-10-22 08:57:18,143 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-10-22 08:57:18,193 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. [2019-10-22 08:57:18,194 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 [2019-10-22 08:57:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:57:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-10-22 08:57:18,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2019-10-22 08:57:18,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:18,199 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 08:57:18,199 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:18,199 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2019-10-22 08:57:18,199 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:18,200 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 45 transitions. [2019-10-22 08:57:18,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:57:18,207 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 7 states and 10 transitions. [2019-10-22 08:57:18,208 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-10-22 08:57:18,209 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:57:18,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-10-22 08:57:18,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:57:18,210 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 08:57:18,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-10-22 08:57:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-10-22 08:57:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 08:57:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-10-22 08:57:18,238 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 08:57:18,238 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 08:57:18,238 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:57:18,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-10-22 08:57:18,238 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:57:18,238 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:18,238 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:18,239 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:57:18,239 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:57:18,239 INFO L791 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 87#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 82#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 83#L21-2 [2019-10-22 08:57:18,239 INFO L793 eck$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 [2019-10-22 08:57:18,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:18,240 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-10-22 08:57:18,240 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:18,240 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580918220] [2019-10-22 08:57:18,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,254 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:18,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:18,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-10-22 08:57:18,254 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:18,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510213092] [2019-10-22 08:57:18,255 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,255 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,265 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-10-22 08:57:18,266 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:18,266 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473567759] [2019-10-22 08:57:18,267 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,267 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,284 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:18,315 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:18,315 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:18,315 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:18,315 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:18,315 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:57:18,315 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:18,315 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:18,316 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:18,316 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2019-10-22 08:57:18,316 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:18,316 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:18,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,421 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:18,421 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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 [2019-10-22 08:57:18,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:18,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:18,442 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:18,442 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/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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 [2019-10-22 08:57:18,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:18,455 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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 [2019-10-22 08:57:18,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:18,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:18,471 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:57:18,473 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:18,473 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:18,473 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:18,473 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:18,474 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:57:18,474 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:18,474 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:18,474 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:18,474 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2019-10-22 08:57:18,474 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:18,474 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:18,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,565 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:18,565 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:57:18,566 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 [2019-10-22 08:57:18,567 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:18,567 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:18,567 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:18,567 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:18,567 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:18,568 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:18,568 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:18,573 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:57:18,577 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:57:18,577 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:57:18,578 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:57:18,578 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:57:18,578 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:57:18,578 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-10-22 08:57:18,579 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:57:18,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:18,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:18,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:18,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:18,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:18,635 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 [2019-10-22 08:57:18,635 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 08:57:18,657 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. [2019-10-22 08:57:18,659 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 [2019-10-22 08:57:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:57:18,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-10-22 08:57:18,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 08:57:18,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:18,662 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-10-22 08:57:18,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:18,662 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-10-22 08:57:18,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:18,662 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-10-22 08:57:18,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:57:18,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-10-22 08:57:18,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 08:57:18,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 08:57:18,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-10-22 08:57:18,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:57:18,664 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-10-22 08:57:18,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-10-22 08:57:18,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-10-22 08:57:18,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 08:57:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-10-22 08:57:18,667 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-10-22 08:57:18,667 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-10-22 08:57:18,667 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:57:18,667 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-10-22 08:57:18,668 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:57:18,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:18,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:18,668 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-10-22 08:57:18,669 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:57:18,669 INFO L791 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 141#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 136#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 137#L21-2 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 144#L21 assume !(0 != main_~tmp~0 % 256);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 142#L21-2 [2019-10-22 08:57:18,673 INFO L793 eck$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 [2019-10-22 08:57:18,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:18,674 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2019-10-22 08:57:18,674 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:18,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886055885] [2019-10-22 08:57:18,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,712 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:18,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:18,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2019-10-22 08:57:18,713 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:18,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768039803] [2019-10-22 08:57:18,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,736 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:18,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:18,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2019-10-22 08:57:18,737 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:18,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872610785] [2019-10-22 08:57:18,739 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,739 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:18,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:18,772 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:18,807 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:18,807 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:18,807 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:18,807 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:18,808 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:57:18,808 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:18,808 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:18,808 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:18,808 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2019-10-22 08:57:18,808 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:18,808 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:18,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,899 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:18,900 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:57:18,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:18,911 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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) [2019-10-22 08:57:18,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:18,923 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:18,933 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:57:18,936 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:18,936 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:18,936 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:18,936 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:18,936 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:57:18,936 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:18,937 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:18,937 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:18,937 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2019-10-22 08:57:18,937 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:18,937 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:18,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:18,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:19,052 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:19,052 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:57:19,053 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 [2019-10-22 08:57:19,054 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:19,054 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:19,054 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:19,054 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:19,054 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:19,055 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:19,055 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:19,060 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:57:19,063 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:57:19,063 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:57:19,064 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:57:19,064 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:57:19,064 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:57:19,064 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2019-10-22 08:57:19,065 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:57:19,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:19,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:19,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:19,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:19,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:19,107 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 [2019-10-22 08:57:19,107 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-10-22 08:57:19,120 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. [2019-10-22 08:57:19,121 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 [2019-10-22 08:57:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:57:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-10-22 08:57:19,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-10-22 08:57:19,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:19,122 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:57:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:19,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:19,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:19,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:19,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:19,161 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 [2019-10-22 08:57:19,161 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-10-22 08:57:19,175 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. [2019-10-22 08:57:19,177 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 [2019-10-22 08:57:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:57:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-10-22 08:57:19,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-10-22 08:57:19,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:19,178 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:57:19,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:19,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:19,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:19,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:19,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:19,232 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 [2019-10-22 08:57:19,232 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-10-22 08:57:19,246 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. [2019-10-22 08:57:19,246 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 [2019-10-22 08:57:19,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:57:19,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-10-22 08:57:19,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2019-10-22 08:57:19,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:19,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2019-10-22 08:57:19,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:19,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-10-22 08:57:19,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:19,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2019-10-22 08:57:19,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:57:19,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2019-10-22 08:57:19,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:57:19,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 08:57:19,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-10-22 08:57:19,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:57:19,251 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-10-22 08:57:19,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-10-22 08:57:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2019-10-22 08:57:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 08:57:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-10-22 08:57:19,252 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-10-22 08:57:19,252 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-10-22 08:57:19,252 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:57:19,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-10-22 08:57:19,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:57:19,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:19,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:19,254 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:57:19,254 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:57:19,254 INFO L791 eck$LassoCheckResult]: Stem: 287#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 284#L21-2 [2019-10-22 08:57:19,254 INFO L793 eck$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 [2019-10-22 08:57:19,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:19,255 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-10-22 08:57:19,255 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:19,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101271626] [2019-10-22 08:57:19,255 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:19,255 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:19,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:19,261 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:19,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:19,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2019-10-22 08:57:19,262 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:19,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487605606] [2019-10-22 08:57:19,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:19,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:19,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:19,270 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:19,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:19,271 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2019-10-22 08:57:19,271 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:19,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856738299] [2019-10-22 08:57:19,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:19,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:19,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:19,280 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:19,304 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:19,304 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:19,304 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:19,304 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:19,305 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:57:19,305 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:19,305 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:19,305 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:19,305 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration4_Loop [2019-10-22 08:57:19,305 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:19,305 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:19,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:19,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:19,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:19,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:19,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:19,416 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:19,416 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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 [2019-10-22 08:57:19,423 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:19,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:19,429 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:19,429 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/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:57:19,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:19,437 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:19,441 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:19,441 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/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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) [2019-10-22 08:57:19,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:19,447 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:19,457 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:19,457 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/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:57:19,465 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:19,465 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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 [2019-10-22 08:57:19,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:19,477 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:19,490 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:57:19,490 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/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:57:19,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:19,503 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ab8ab78-cd18-4b31-b33c-c1235f5e2c01/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 [2019-10-22 08:57:19,511 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:19,511 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:19,515 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:57:19,516 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:19,517 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:19,517 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:19,517 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:19,517 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:57:19,517 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:19,517 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:19,517 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:19,517 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration4_Loop [2019-10-22 08:57:19,517 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:19,517 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:19,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:19,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:19,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:19,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:19,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:19,602 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:19,602 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:57:19,602 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 [2019-10-22 08:57:19,603 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:19,603 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:19,603 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:19,603 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:19,604 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:19,604 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:19,604 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:19,605 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:57:19,605 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 [2019-10-22 08:57:19,606 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:19,606 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:19,606 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:19,606 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:19,606 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:19,607 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:19,607 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:19,607 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:57:19,608 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 [2019-10-22 08:57:19,608 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:19,608 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:19,608 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:19,609 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:19,609 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:19,610 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:19,610 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:19,612 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:57:19,612 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 [2019-10-22 08:57:19,613 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:19,613 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:19,614 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:19,614 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:19,614 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:19,614 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:19,614 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:19,617 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:57:19,617 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 [2019-10-22 08:57:19,618 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:19,618 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:19,618 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:19,619 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:19,619 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:19,619 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:19,619 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:19,622 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:57:19,624 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:57:19,625 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:57:19,625 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:57:19,625 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:57:19,625 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:57:19,625 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-10-22 08:57:19,626 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:57:19,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:19,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:19,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:19,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:19,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:19,654 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 [2019-10-22 08:57:19,654 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-10-22 08:57:19,663 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. [2019-10-22 08:57:19,663 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 [2019-10-22 08:57:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:57:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 08:57:19,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2019-10-22 08:57:19,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:19,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 08:57:19,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:19,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2019-10-22 08:57:19,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:19,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2019-10-22 08:57:19,665 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:57:19,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2019-10-22 08:57:19,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:57:19,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:57:19,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:57:19,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:57:19,666 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:19,666 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:19,666 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:19,666 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 08:57:19,666 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:57:19,666 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:57:19,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:57:19,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:57:19 BoogieIcfgContainer [2019-10-22 08:57:19,673 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:57:19,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:19,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:19,673 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:19,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:17" (3/4) ... [2019-10-22 08:57:19,677 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:57:19,677 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:19,679 INFO L168 Benchmark]: Toolchain (without parser) took 3106.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 936.9 MB in the beginning and 1.1 GB in the end (delta: -131.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:19,680 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 957.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:19,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 936.9 MB in the beginning and 1.1 GB in the end (delta: -201.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:19,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:19,681 INFO L168 Benchmark]: Boogie Preprocessor took 22.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:19,682 INFO L168 Benchmark]: RCFGBuilder took 274.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:19,682 INFO L168 Benchmark]: BuchiAutomizer took 2492.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:19,682 INFO L168 Benchmark]: Witness Printer took 4.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:19,685 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 957.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 273.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 936.9 MB in the beginning and 1.1 GB in the end (delta: -201.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 274.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2492.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. 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 2.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. 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: 12ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...