./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/MultCommutative-2.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/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/MultCommutative-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/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 a755472942b72da612d26a2f3af20ed4332f07b5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:42:06,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:42:06,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:42:06,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:42:06,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:42:06,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:42:06,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:42:06,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:42:06,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:42:06,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:42:06,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:42:06,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:42:06,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:42:06,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:42:06,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:42:06,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:42:06,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:42:06,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:42:06,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:42:06,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:42:06,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:42:06,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:42:06,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:42:06,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:42:06,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:42:06,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:42:06,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:42:06,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:42:06,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:42:06,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:42:06,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:42:06,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:42:06,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:42:06,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:42:06,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:42:06,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:42:06,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:42:06,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:42:06,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:42:06,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:42:06,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:42:06,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-16 00:42:06,502 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:42:06,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:42:06,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:42:06,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:42:06,504 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:42:06,505 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-16 00:42:06,505 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-16 00:42:06,505 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-16 00:42:06,505 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-16 00:42:06,506 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-16 00:42:06,506 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-16 00:42:06,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:42:06,506 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:42:06,507 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-16 00:42:06,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:42:06,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:42:06,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:42:06,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-16 00:42:06,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-16 00:42:06,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-16 00:42:06,508 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:42:06,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:42:06,509 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-16 00:42:06,509 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:42:06,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-16 00:42:06,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:42:06,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:42:06,510 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-16 00:42:06,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:42:06,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:42:06,511 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-16 00:42:06,512 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-16 00:42:06,512 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/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 -> a755472942b72da612d26a2f3af20ed4332f07b5 [2019-11-16 00:42:06,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:42:06,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:42:06,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:42:06,551 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:42:06,551 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:42:06,552 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/../../sv-benchmarks/c/recursive/MultCommutative-2.c [2019-11-16 00:42:06,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/data/9bd7e4227/f98c738ae9a646b8b615de688274d2c7/FLAG68f78d68b [2019-11-16 00:42:06,984 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:42:06,984 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/sv-benchmarks/c/recursive/MultCommutative-2.c [2019-11-16 00:42:06,990 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/data/9bd7e4227/f98c738ae9a646b8b615de688274d2c7/FLAG68f78d68b [2019-11-16 00:42:06,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/data/9bd7e4227/f98c738ae9a646b8b615de688274d2c7 [2019-11-16 00:42:07,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:42:07,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:42:07,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:42:07,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:42:07,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:42:07,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:42:07" (1/1) ... [2019-11-16 00:42:07,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182b198d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07, skipping insertion in model container [2019-11-16 00:42:07,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:42:07" (1/1) ... [2019-11-16 00:42:07,018 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:42:07,033 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:42:07,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:42:07,237 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:42:07,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:42:07,272 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:42:07,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07 WrapperNode [2019-11-16 00:42:07,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:42:07,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:42:07,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:42:07,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:42:07,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07" (1/1) ... [2019-11-16 00:42:07,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07" (1/1) ... [2019-11-16 00:42:07,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:42:07,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:42:07,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:42:07,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:42:07,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07" (1/1) ... [2019-11-16 00:42:07,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07" (1/1) ... [2019-11-16 00:42:07,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07" (1/1) ... [2019-11-16 00:42:07,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07" (1/1) ... [2019-11-16 00:42:07,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07" (1/1) ... [2019-11-16 00:42:07,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07" (1/1) ... [2019-11-16 00:42:07,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07" (1/1) ... [2019-11-16 00:42:07,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:42:07,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:42:07,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:42:07,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:42:07,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2019-11-16 00:42:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2019-11-16 00:42:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:42:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:42:07,596 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:42:07,596 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-16 00:42:07,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:07 BoogieIcfgContainer [2019-11-16 00:42:07,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:42:07,598 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-16 00:42:07,598 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-16 00:42:07,602 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-16 00:42:07,603 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:42:07,603 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 12:42:07" (1/3) ... [2019-11-16 00:42:07,604 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ba0bf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:42:07, skipping insertion in model container [2019-11-16 00:42:07,605 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:42:07,605 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:07" (2/3) ... [2019-11-16 00:42:07,605 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ba0bf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:42:07, skipping insertion in model container [2019-11-16 00:42:07,605 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:42:07,606 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:07" (3/3) ... [2019-11-16 00:42:07,607 INFO L371 chiAutomizerObserver]: Analyzing ICFG MultCommutative-2.c [2019-11-16 00:42:07,686 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-16 00:42:07,687 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-16 00:42:07,687 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-16 00:42:07,687 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:42:07,687 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:42:07,688 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-16 00:42:07,688 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:42:07,688 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-16 00:42:07,702 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-11-16 00:42:07,725 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-16 00:42:07,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:42:07,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:42:07,733 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-16 00:42:07,734 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-16 00:42:07,734 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-16 00:42:07,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-11-16 00:42:07,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-16 00:42:07,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:42:07,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:42:07,737 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-16 00:42:07,737 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-16 00:42:07,744 INFO L791 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L27true assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 10#L31true assume !(main_~n~0 < 0 || main_~n~0 > 46340); 16#L34true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 4#multENTRYtrue [2019-11-16 00:42:07,745 INFO L793 eck$LassoCheckResult]: Loop: 4#multENTRYtrue ~n := #in~n;~m := #in~m; 6#L16true assume ~m < 0; 3#L17true call #t~ret0 := mult(~n, -~m);< 4#multENTRYtrue [2019-11-16 00:42:07,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:07,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1390425, now seen corresponding path program 1 times [2019-11-16 00:42:07,758 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:07,758 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687780503] [2019-11-16 00:42:07,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:07,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:07,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:07,846 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:07,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:07,847 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 1 times [2019-11-16 00:42:07,847 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:07,847 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380224199] [2019-11-16 00:42:07,847 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:07,847 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:07,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:07,858 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:07,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:07,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1527521652, now seen corresponding path program 1 times [2019-11-16 00:42:07,860 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:07,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211864361] [2019-11-16 00:42:07,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:07,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:07,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:42:07,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211864361] [2019-11-16 00:42:07,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:42:07,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:42:07,949 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193807413] [2019-11-16 00:42:08,058 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:42:08,059 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:42:08,059 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:42:08,059 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:42:08,060 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-16 00:42:08,060 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:08,060 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:42:08,060 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:42:08,060 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2019-11-16 00:42:08,061 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:42:08,061 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:42:08,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,279 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:42:08,283 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/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) [2019-11-16 00:42:08,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:08,295 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:08,311 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:08,312 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:08,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:08,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:08,323 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:08,323 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/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) [2019-11-16 00:42:08,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:08,334 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 [2019-11-16 00:42:08,340 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:08,340 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:08,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:08,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:08,357 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:08,357 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/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) [2019-11-16 00:42:08,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:08,386 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:08,393 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:08,393 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:08,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:08,399 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:08,403 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:08,404 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/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) [2019-11-16 00:42:08,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:08,426 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:08,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-16 00:42:08,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:08,513 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-16 00:42:08,516 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:42:08,517 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:42:08,517 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:42:08,517 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:42:08,517 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-16 00:42:08,517 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:08,517 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:42:08,517 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:42:08,517 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2019-11-16 00:42:08,518 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:42:08,518 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:42:08,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:08,604 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:42:08,609 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-16 00:42:08,610 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:08,611 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:08,611 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:08,612 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:08,612 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:08,612 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:08,615 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:08,615 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:08,617 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:08,618 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:08,619 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:08,620 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:08,620 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:08,620 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:08,620 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:08,621 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:08,621 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:08,626 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:08,626 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:08,627 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:08,627 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:08,628 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:08,628 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:08,628 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:08,628 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:08,629 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:08,630 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:08,641 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:08,642 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:08,642 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:08,642 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:08,643 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:08,643 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:08,643 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:08,644 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:08,646 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:08,647 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:08,647 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:08,648 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:08,650 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:08,651 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:08,651 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:08,651 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:08,651 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:08,652 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:08,653 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:08,653 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:08,654 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:08,654 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:08,654 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:08,654 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:08,655 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:08,655 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:08,657 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:08,657 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:08,658 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:08,658 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:08,658 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:08,658 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:08,658 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:08,659 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:08,659 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:08,664 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-16 00:42:08,668 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-16 00:42:08,668 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-16 00:42:08,670 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-16 00:42:08,670 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-16 00:42:08,671 INFO L510 LassoAnalysis]: Proved termination. [2019-11-16 00:42:08,674 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2019-11-16 00:42:08,677 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-16 00:42:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:08,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:42:08,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:42:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:08,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:42:08,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:42:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:42:08,809 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-16 00:42:08,810 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states. Second operand 4 states. [2019-11-16 00:42:08,929 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states.. Second operand 4 states. Result 50 states and 65 transitions. Complement of second has 12 states. [2019-11-16 00:42:08,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-16 00:42:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-16 00:42:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-16 00:42:08,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-16 00:42:08,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:08,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-16 00:42:08,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:08,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-16 00:42:08,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:08,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 65 transitions. [2019-11-16 00:42:08,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-16 00:42:08,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 31 states and 44 transitions. [2019-11-16 00:42:08,950 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-11-16 00:42:08,951 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-16 00:42:08,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 44 transitions. [2019-11-16 00:42:08,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-16 00:42:08,952 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2019-11-16 00:42:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 44 transitions. [2019-11-16 00:42:08,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2019-11-16 00:42:08,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-16 00:42:08,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2019-11-16 00:42:08,983 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2019-11-16 00:42:08,984 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:42:08,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:42:08,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:42:08,987 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 5 states. [2019-11-16 00:42:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:42:09,058 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2019-11-16 00:42:09,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:42:09,060 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2019-11-16 00:42:09,061 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-16 00:42:09,063 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 26 states and 33 transitions. [2019-11-16 00:42:09,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-11-16 00:42:09,063 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-16 00:42:09,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 33 transitions. [2019-11-16 00:42:09,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-16 00:42:09,064 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-16 00:42:09,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 33 transitions. [2019-11-16 00:42:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2019-11-16 00:42:09,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-16 00:42:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-11-16 00:42:09,068 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-16 00:42:09,069 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-16 00:42:09,073 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-16 00:42:09,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2019-11-16 00:42:09,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-16 00:42:09,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:42:09,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:42:09,079 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:42:09,079 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-16 00:42:09,079 INFO L791 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 197#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 198#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 192#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 191#multENTRY ~n := #in~n;~m := #in~m; 193#L16 assume !(~m < 0); 194#L19 assume !(0 == ~m); 187#L22 call #t~ret1 := mult(~n, ~m - 1);< 190#multENTRY [2019-11-16 00:42:09,079 INFO L793 eck$LassoCheckResult]: Loop: 190#multENTRY ~n := #in~n;~m := #in~m; 205#L16 assume ~m < 0; 186#L17 call #t~ret0 := mult(~n, -~m);< 190#multENTRY [2019-11-16 00:42:09,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:09,080 INFO L82 PathProgramCache]: Analyzing trace with hash -108528961, now seen corresponding path program 1 times [2019-11-16 00:42:09,080 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:09,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883922086] [2019-11-16 00:42:09,080 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:09,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:09,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:09,098 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:09,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:09,099 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 2 times [2019-11-16 00:42:09,099 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:09,100 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524437364] [2019-11-16 00:42:09,100 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:09,100 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:09,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:09,111 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:09,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:09,111 INFO L82 PathProgramCache]: Analyzing trace with hash 924096870, now seen corresponding path program 1 times [2019-11-16 00:42:09,112 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:09,112 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747783240] [2019-11-16 00:42:09,112 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:09,112 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:09,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:42:09,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747783240] [2019-11-16 00:42:09,159 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:42:09,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:42:09,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823310791] [2019-11-16 00:42:09,211 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:42:09,211 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:42:09,211 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:42:09,211 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:42:09,211 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-16 00:42:09,211 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:09,211 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:42:09,211 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:42:09,211 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2019-11-16 00:42:09,211 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:42:09,212 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:42:09,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,307 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:42:09,307 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/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) [2019-11-16 00:42:09,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:09,323 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 [2019-11-16 00:42:09,327 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:09,328 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:42:09,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:09,342 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:09,345 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:09,345 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:42:09,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:09,364 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 [2019-11-16 00:42:09,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:09,369 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/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) [2019-11-16 00:42:09,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:09,390 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 [2019-11-16 00:42:09,394 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:09,395 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:42:09,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:09,409 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 [2019-11-16 00:42:09,413 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:09,413 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:42:09,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:09,430 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:09,436 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:09,436 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:42:09,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:09,446 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/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:42:09,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-16 00:42:09,470 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:09,535 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-16 00:42:09,539 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:42:09,539 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:42:09,539 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:42:09,539 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:42:09,539 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-16 00:42:09,540 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:09,540 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:42:09,540 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:42:09,540 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2019-11-16 00:42:09,540 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:42:09,540 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:42:09,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:09,626 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:42:09,626 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-16 00:42:09,626 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:09,627 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:09,627 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:09,628 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:09,628 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:09,628 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:09,629 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:09,629 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:09,630 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:09,630 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:09,631 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:09,631 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:09,632 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:09,632 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:09,632 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:09,632 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:09,636 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:09,638 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:09,638 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:09,641 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:09,641 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:09,642 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:09,642 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:09,642 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:09,643 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:09,643 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:09,648 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:09,649 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:09,651 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:09,651 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:09,651 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:09,651 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:09,651 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:09,655 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:09,655 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:09,656 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:09,656 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:09,657 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:09,657 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:09,657 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:09,658 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:09,658 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:09,658 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:09,658 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:09,660 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:09,660 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:09,661 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:09,661 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:09,661 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:09,661 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:09,661 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:09,662 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:09,662 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:09,676 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-16 00:42:09,688 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-16 00:42:09,688 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-16 00:42:09,689 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-16 00:42:09,689 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-16 00:42:09,689 INFO L510 LassoAnalysis]: Proved termination. [2019-11-16 00:42:09,689 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2019-11-16 00:42:09,690 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-16 00:42:09,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:09,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:42:09,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:42:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:09,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:42:09,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:42:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:42:09,786 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-16 00:42:09,786 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-16 00:42:09,888 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 72 states and 91 transitions. Complement of second has 15 states. [2019-11-16 00:42:09,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-16 00:42:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-16 00:42:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2019-11-16 00:42:09,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-16 00:42:09,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:09,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 11 letters. Loop has 3 letters. [2019-11-16 00:42:09,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:09,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-16 00:42:09,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:09,891 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 91 transitions. [2019-11-16 00:42:09,894 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-16 00:42:09,902 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 50 states and 65 transitions. [2019-11-16 00:42:09,902 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2019-11-16 00:42:09,903 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2019-11-16 00:42:09,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 65 transitions. [2019-11-16 00:42:09,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-16 00:42:09,903 INFO L688 BuchiCegarLoop]: Abstraction has 50 states and 65 transitions. [2019-11-16 00:42:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 65 transitions. [2019-11-16 00:42:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2019-11-16 00:42:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-16 00:42:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2019-11-16 00:42:09,910 INFO L711 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-16 00:42:09,910 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:42:09,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:42:09,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:42:09,910 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 5 states. [2019-11-16 00:42:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:42:09,970 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2019-11-16 00:42:09,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:42:09,971 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 59 transitions. [2019-11-16 00:42:09,973 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-11-16 00:42:09,974 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 47 transitions. [2019-11-16 00:42:09,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-16 00:42:09,975 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-11-16 00:42:09,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 47 transitions. [2019-11-16 00:42:09,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-16 00:42:09,975 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-11-16 00:42:09,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 47 transitions. [2019-11-16 00:42:09,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-11-16 00:42:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-16 00:42:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2019-11-16 00:42:09,981 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-11-16 00:42:09,981 INFO L591 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-11-16 00:42:09,981 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-16 00:42:09,981 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 47 transitions. [2019-11-16 00:42:09,983 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-11-16 00:42:09,983 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:42:09,983 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:42:09,984 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:42:09,984 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-16 00:42:09,984 INFO L791 eck$LassoCheckResult]: Stem: 461#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 458#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 459#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 460#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 467#multENTRY ~n := #in~n;~m := #in~m; 479#L16 assume !(~m < 0); 476#L19 assume 0 == ~m;#res := 0; 475#multFINAL assume true; 469#multEXIT >#45#return; 466#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 451#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 452#multENTRY [2019-11-16 00:42:09,984 INFO L793 eck$LassoCheckResult]: Loop: 452#multENTRY ~n := #in~n;~m := #in~m; 474#L16 assume ~m < 0; 450#L17 call #t~ret0 := mult(~n, -~m);< 452#multENTRY [2019-11-16 00:42:09,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:09,984 INFO L82 PathProgramCache]: Analyzing trace with hash 922353405, now seen corresponding path program 1 times [2019-11-16 00:42:09,985 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:09,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146093987] [2019-11-16 00:42:09,985 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:09,985 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:09,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:09,997 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:09,998 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 3 times [2019-11-16 00:42:09,998 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:09,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279051633] [2019-11-16 00:42:09,998 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:09,998 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:09,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:10,004 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:10,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:10,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1370471320, now seen corresponding path program 1 times [2019-11-16 00:42:10,005 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:10,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782399121] [2019-11-16 00:42:10,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:10,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:10,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:42:10,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782399121] [2019-11-16 00:42:10,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:42:10,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:42:10,043 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337511070] [2019-11-16 00:42:10,092 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:42:10,092 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:42:10,093 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:42:10,093 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:42:10,093 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-16 00:42:10,093 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,093 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:42:10,093 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:42:10,093 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2019-11-16 00:42:10,094 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:42:10,094 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:42:10,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,155 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:42:10,155 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:10,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:10,169 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:10,169 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:10,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:10,179 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:10,179 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:10,184 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:10,187 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:10,187 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:10,196 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:10,198 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:10,198 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:10,205 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:42:10,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-16 00:42:10,218 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,228 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-16 00:42:10,230 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:42:10,230 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:42:10,230 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:42:10,230 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:42:10,230 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-16 00:42:10,230 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,230 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:42:10,230 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:42:10,230 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2019-11-16 00:42:10,231 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:42:10,231 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:42:10,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,318 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:42:10,318 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-16 00:42:10,319 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:10,319 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:10,320 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:10,320 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:10,320 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:10,320 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:10,320 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:10,321 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:10,322 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:10,322 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:10,323 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:10,323 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:10,323 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:10,323 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:10,323 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:10,324 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:10,324 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:10,324 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:10,326 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:10,326 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:10,327 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:10,327 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:10,327 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:10,327 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:10,333 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:10,333 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:10,334 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:10,334 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:10,335 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:10,336 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:10,336 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:10,336 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:10,336 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:10,336 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:10,337 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:10,338 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:10,338 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:10,339 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:10,339 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:10,339 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:10,339 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:10,339 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:10,340 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:10,340 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:10,343 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-16 00:42:10,345 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-16 00:42:10,345 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-16 00:42:10,346 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-16 00:42:10,346 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-16 00:42:10,346 INFO L510 LassoAnalysis]: Proved termination. [2019-11-16 00:42:10,346 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2019-11-16 00:42:10,347 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-16 00:42:10,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:10,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:42:10,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:42:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:10,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:42:10,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:42:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:42:10,491 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2019-11-16 00:42:10,491 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 47 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-11-16 00:42:10,589 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 47 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 81 states and 90 transitions. Complement of second has 14 states. [2019-11-16 00:42:10,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-16 00:42:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-16 00:42:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2019-11-16 00:42:10,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 11 letters. Loop has 3 letters. [2019-11-16 00:42:10,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:10,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 14 letters. Loop has 3 letters. [2019-11-16 00:42:10,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:10,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 11 letters. Loop has 6 letters. [2019-11-16 00:42:10,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:10,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 90 transitions. [2019-11-16 00:42:10,595 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-16 00:42:10,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 62 states and 70 transitions. [2019-11-16 00:42:10,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2019-11-16 00:42:10,599 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2019-11-16 00:42:10,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 70 transitions. [2019-11-16 00:42:10,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-16 00:42:10,599 INFO L688 BuchiCegarLoop]: Abstraction has 62 states and 70 transitions. [2019-11-16 00:42:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 70 transitions. [2019-11-16 00:42:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 35. [2019-11-16 00:42:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-16 00:42:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-11-16 00:42:10,604 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-11-16 00:42:10,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:42:10,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:42:10,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:42:10,605 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2019-11-16 00:42:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:42:10,638 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-11-16 00:42:10,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:42:10,639 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 40 transitions. [2019-11-16 00:42:10,640 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-16 00:42:10,641 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 39 transitions. [2019-11-16 00:42:10,641 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-11-16 00:42:10,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-16 00:42:10,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 39 transitions. [2019-11-16 00:42:10,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-16 00:42:10,644 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-11-16 00:42:10,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 39 transitions. [2019-11-16 00:42:10,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-16 00:42:10,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-16 00:42:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-16 00:42:10,647 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-16 00:42:10,647 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-16 00:42:10,648 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-16 00:42:10,648 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 35 transitions. [2019-11-16 00:42:10,649 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-16 00:42:10,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:42:10,650 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:42:10,650 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:42:10,650 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-16 00:42:10,650 INFO L791 eck$LassoCheckResult]: Stem: 741#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 738#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 739#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 740#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 747#multENTRY ~n := #in~n;~m := #in~m; 754#L16 assume !(~m < 0); 752#L19 assume 0 == ~m;#res := 0; 751#multFINAL assume true; 750#multEXIT >#45#return; 746#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 736#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 733#multENTRY [2019-11-16 00:42:10,651 INFO L793 eck$LassoCheckResult]: Loop: 733#multENTRY ~n := #in~n;~m := #in~m; 735#L16 assume !(~m < 0); 737#L19 assume !(0 == ~m); 734#L22 call #t~ret1 := mult(~n, ~m - 1);< 733#multENTRY [2019-11-16 00:42:10,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:10,651 INFO L82 PathProgramCache]: Analyzing trace with hash 922353405, now seen corresponding path program 2 times [2019-11-16 00:42:10,651 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:10,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792746955] [2019-11-16 00:42:10,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:10,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:10,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:10,664 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:10,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:10,664 INFO L82 PathProgramCache]: Analyzing trace with hash 929639, now seen corresponding path program 1 times [2019-11-16 00:42:10,665 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:10,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421468064] [2019-11-16 00:42:10,665 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:10,665 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:10,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:10,671 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:10,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:10,671 INFO L82 PathProgramCache]: Analyzing trace with hash 465064035, now seen corresponding path program 1 times [2019-11-16 00:42:10,672 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:10,672 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611588727] [2019-11-16 00:42:10,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:10,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:10,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:10,685 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:10,751 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:42:10,751 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:42:10,752 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:42:10,752 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:42:10,752 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-16 00:42:10,752 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,752 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:42:10,752 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:42:10,752 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2019-11-16 00:42:10,752 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:42:10,752 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:42:10,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,839 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:42:10,839 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:42:10,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:10,844 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:10,848 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:10,848 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:10,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:10,856 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:10,856 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:10,861 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:10,864 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:10,864 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:10,872 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-16 00:42:10,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:10,921 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-16 00:42:10,922 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:42:10,922 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:42:10,922 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:42:10,922 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:42:10,922 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-16 00:42:10,922 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:10,922 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:42:10,923 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:42:10,923 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2019-11-16 00:42:10,923 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:42:10,923 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:42:10,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:10,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,001 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:42:11,001 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-16 00:42:11,001 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:11,002 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:11,002 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:11,002 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:11,002 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:11,002 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:11,002 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:11,002 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:11,003 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:11,004 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:11,004 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:11,004 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:11,004 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:11,004 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:11,005 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:11,005 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:11,005 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:11,006 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:11,006 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:11,006 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:11,006 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:11,007 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:11,007 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:11,007 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:11,007 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:11,007 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:11,010 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-16 00:42:11,012 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-16 00:42:11,012 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-16 00:42:11,012 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-16 00:42:11,012 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-16 00:42:11,013 INFO L510 LassoAnalysis]: Proved termination. [2019-11-16 00:42:11,013 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2019-11-16 00:42:11,013 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-16 00:42:11,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:11,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:42:11,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:42:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:11,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:42:11,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:42:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:42:11,114 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2019-11-16 00:42:11,114 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 35 transitions. cyclomatic complexity: 6 Second operand 5 states. [2019-11-16 00:42:11,174 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 35 transitions. cyclomatic complexity: 6. Second operand 5 states. Result 41 states and 45 transitions. Complement of second has 13 states. [2019-11-16 00:42:11,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-16 00:42:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-16 00:42:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-16 00:42:11,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-16 00:42:11,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:11,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-16 00:42:11,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:11,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-16 00:42:11,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:11,176 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 45 transitions. [2019-11-16 00:42:11,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-16 00:42:11,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 15 states and 15 transitions. [2019-11-16 00:42:11,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-16 00:42:11,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-16 00:42:11,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 15 transitions. [2019-11-16 00:42:11,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-16 00:42:11,179 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-16 00:42:11,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 15 transitions. [2019-11-16 00:42:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 8. [2019-11-16 00:42:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-16 00:42:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-16 00:42:11,180 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-16 00:42:11,180 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-16 00:42:11,180 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-16 00:42:11,180 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 8 transitions. [2019-11-16 00:42:11,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-16 00:42:11,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:42:11,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:42:11,181 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-16 00:42:11,181 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-16 00:42:11,181 INFO L791 eck$LassoCheckResult]: Stem: 892#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 893#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 886#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 887#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 889#multENTRY [2019-11-16 00:42:11,181 INFO L793 eck$LassoCheckResult]: Loop: 889#multENTRY ~n := #in~n;~m := #in~m; 890#L16 assume !(~m < 0); 891#L19 assume !(0 == ~m); 888#L22 call #t~ret1 := mult(~n, ~m - 1);< 889#multENTRY [2019-11-16 00:42:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:11,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1390425, now seen corresponding path program 2 times [2019-11-16 00:42:11,181 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:11,182 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615416447] [2019-11-16 00:42:11,182 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:11,182 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:11,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:11,189 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:11,189 INFO L82 PathProgramCache]: Analyzing trace with hash 929639, now seen corresponding path program 2 times [2019-11-16 00:42:11,189 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:11,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196400109] [2019-11-16 00:42:11,189 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:11,190 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:11,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:11,195 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:11,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:11,195 INFO L82 PathProgramCache]: Analyzing trace with hash -108528961, now seen corresponding path program 2 times [2019-11-16 00:42:11,195 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:42:11,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77377947] [2019-11-16 00:42:11,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:11,196 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:42:11,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:42:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:42:11,204 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:42:11,265 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:42:11,265 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:42:11,266 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:42:11,266 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:42:11,266 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-16 00:42:11,266 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:11,266 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:42:11,266 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:42:11,266 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2019-11-16 00:42:11,266 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:42:11,266 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:42:11,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,330 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:42:11,330 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:11,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:11,333 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:11,337 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:11,337 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:11,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:11,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:11,344 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:11,344 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:11,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:11,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:11,351 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:11,351 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:11,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:11,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:11,357 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:11,357 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:11,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:11,362 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:11,364 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:42:11,364 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:11,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:42:11,368 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fffa4c-fa0a-42af-b7c6-f51906ecdcde/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:11,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-16 00:42:11,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:42:11,419 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-16 00:42:11,421 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:42:11,421 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:42:11,421 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:42:11,421 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:42:11,421 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-16 00:42:11,421 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:42:11,421 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:42:11,421 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:42:11,421 INFO L131 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2019-11-16 00:42:11,421 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:42:11,422 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:42:11,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:42:11,519 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:42:11,519 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-16 00:42:11,520 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:11,521 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:11,521 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:11,521 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:11,521 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:11,521 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:11,522 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:11,522 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:11,523 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:11,523 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:11,523 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:11,524 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:11,524 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:11,524 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:11,524 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:11,525 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:11,525 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:11,526 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:11,526 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:11,527 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:11,527 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:11,527 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:11,527 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:11,527 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:11,528 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:11,528 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:11,529 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:11,529 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:11,530 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:11,530 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:11,530 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:11,530 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:11,531 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:11,531 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:11,531 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:11,532 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:11,532 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:11,533 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:11,533 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:11,533 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:11,533 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:11,533 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:11,534 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:11,534 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:11,535 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:42:11,535 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-16 00:42:11,536 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:42:11,536 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:42:11,536 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:42:11,536 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:42:11,536 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:42:11,537 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:42:11,537 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:42:11,539 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-16 00:42:11,541 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-16 00:42:11,542 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-16 00:42:11,542 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-16 00:42:11,542 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-16 00:42:11,542 INFO L510 LassoAnalysis]: Proved termination. [2019-11-16 00:42:11,543 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2019-11-16 00:42:11,543 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-16 00:42:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:42:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:11,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:42:11,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:42:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:42:11,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:42:11,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:42:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:42:11,594 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-16 00:42:11,594 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 8 transitions. cyclomatic complexity: 1 Second operand 4 states. [2019-11-16 00:42:11,632 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 8 transitions. cyclomatic complexity: 1. Second operand 4 states. Result 18 states and 18 transitions. Complement of second has 11 states. [2019-11-16 00:42:11,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-16 00:42:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-16 00:42:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-16 00:42:11,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-16 00:42:11,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:11,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-16 00:42:11,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:11,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 8 letters. [2019-11-16 00:42:11,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:42:11,635 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 18 transitions. [2019-11-16 00:42:11,635 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-16 00:42:11,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2019-11-16 00:42:11,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-16 00:42:11,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-16 00:42:11,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-16 00:42:11,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-16 00:42:11,636 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:42:11,636 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:42:11,636 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:42:11,636 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-16 00:42:11,637 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:42:11,637 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-16 00:42:11,637 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-16 00:42:11,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 12:42:11 BoogieIcfgContainer [2019-11-16 00:42:11,643 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-16 00:42:11,643 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:42:11,643 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:42:11,644 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:42:11,644 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:07" (3/4) ... [2019-11-16 00:42:11,647 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-16 00:42:11,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:42:11,649 INFO L168 Benchmark]: Toolchain (without parser) took 4643.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.8 MB). Free memory was 946.1 MB in the beginning and 965.3 MB in the end (delta: -19.2 MB). Peak memory consumption was 192.6 MB. Max. memory is 11.5 GB. [2019-11-16 00:42:11,649 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:42:11,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -170.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:42:11,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.48 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. [2019-11-16 00:42:11,651 INFO L168 Benchmark]: Boogie Preprocessor took 27.12 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. [2019-11-16 00:42:11,651 INFO L168 Benchmark]: RCFGBuilder took 267.59 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-11-16 00:42:11,652 INFO L168 Benchmark]: BuchiAutomizer took 4044.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 86.0 MB). Free memory was 1.1 GB in the beginning and 965.3 MB in the end (delta: 128.4 MB). Peak memory consumption was 214.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:42:11,652 INFO L168 Benchmark]: Witness Printer took 3.75 ms. Allocated memory is still 1.2 GB. Free memory is still 965.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:42:11,655 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 268.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -170.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.48 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. * Boogie Preprocessor took 27.12 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 267.59 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: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4044.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 86.0 MB). Free memory was 1.1 GB in the beginning and 965.3 MB in the end (delta: 128.4 MB). Peak memory consumption was 214.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.75 ms. Allocated memory is still 1.2 GB. Free memory is still 965.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * \old(m) and consists of 4 locations. One deterministic module has affine ranking function -1 * \old(m) and consists of 5 locations. One deterministic module has affine ranking function -1 * \old(m) and consists of 5 locations. One deterministic module has affine ranking function \old(m) and consists of 5 locations. One deterministic module has affine ranking function \old(m) and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.6s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 53 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 41 states and ocurred in iteration 2. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 120 SDtfs, 136 SDslu, 102 SDs, 0 SdLazy, 159 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp80 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 24 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...