./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/MultCommutative-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/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 0.1.25-f470102 [2019-12-07 18:57:53,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:57:53,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:57:53,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:57:53,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:57:53,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:57:53,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:57:53,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:57:53,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:57:53,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:57:53,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:57:53,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:57:53,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:57:53,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:57:53,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:57:53,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:57:53,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:57:53,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:57:53,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:57:53,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:57:53,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:57:53,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:57:53,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:57:53,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:57:53,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:57:53,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:57:53,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:57:53,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:57:53,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:57:53,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:57:53,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:57:53,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:57:53,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:57:53,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:57:53,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:57:53,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:57:53,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:57:53,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:57:53,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:57:53,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:57:53,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:57:53,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 18:57:53,705 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:57:53,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:57:53,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:57:53,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:57:53,706 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:57:53,706 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:57:53,706 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:57:53,706 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:57:53,707 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:57:53,707 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:57:53,707 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:57:53,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:57:53,707 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:57:53,707 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:57:53,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:57:53,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:57:53,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:57:53,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:57:53,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:57:53,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:57:53,708 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:57:53,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:57:53,708 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:57:53,708 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:57:53,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:57:53,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:57:53,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:57:53,709 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:57:53,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:57:53,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:57:53,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:57:53,709 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:57:53,710 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:57:53,710 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_c08e2917-d3f3-4644-a3f7-860774a053d6/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 [2019-12-07 18:57:53,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:57:53,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:57:53,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:57:53,819 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:57:53,819 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:57:53,819 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/../../sv-benchmarks/c/recursive/MultCommutative-2.c [2019-12-07 18:57:53,857 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/data/d458ce60e/b2656c53e2cd4fba9b96525e14f80d12/FLAG02a14e01f [2019-12-07 18:57:54,320 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:57:54,320 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/sv-benchmarks/c/recursive/MultCommutative-2.c [2019-12-07 18:57:54,325 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/data/d458ce60e/b2656c53e2cd4fba9b96525e14f80d12/FLAG02a14e01f [2019-12-07 18:57:54,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/data/d458ce60e/b2656c53e2cd4fba9b96525e14f80d12 [2019-12-07 18:57:54,340 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:57:54,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:57:54,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:57:54,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:57:54,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:57:54,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:57:54" (1/1) ... [2019-12-07 18:57:54,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174ba895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54, skipping insertion in model container [2019-12-07 18:57:54,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:57:54" (1/1) ... [2019-12-07 18:57:54,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:57:54,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:57:54,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:57:54,473 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:57:54,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:57:54,527 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:57:54,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54 WrapperNode [2019-12-07 18:57:54,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:57:54,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:57:54,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:57:54,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:57:54,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54" (1/1) ... [2019-12-07 18:57:54,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54" (1/1) ... [2019-12-07 18:57:54,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:57:54,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:57:54,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:57:54,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:57:54,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54" (1/1) ... [2019-12-07 18:57:54,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54" (1/1) ... [2019-12-07 18:57:54,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54" (1/1) ... [2019-12-07 18:57:54,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54" (1/1) ... [2019-12-07 18:57:54,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54" (1/1) ... [2019-12-07 18:57:54,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54" (1/1) ... [2019-12-07 18:57:54,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54" (1/1) ... [2019-12-07 18:57:54,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:57:54,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:57:54,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:57:54,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:57:54,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2019-12-07 18:57:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2019-12-07 18:57:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:57:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:57:54,701 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:57:54,701 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 18:57:54,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:57:54 BoogieIcfgContainer [2019-12-07 18:57:54,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:57:54,702 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:57:54,702 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:57:54,705 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:57:54,705 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:57:54,705 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:57:54" (1/3) ... [2019-12-07 18:57:54,706 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60ecf69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:57:54, skipping insertion in model container [2019-12-07 18:57:54,706 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:57:54,706 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:57:54" (2/3) ... [2019-12-07 18:57:54,706 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60ecf69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:57:54, skipping insertion in model container [2019-12-07 18:57:54,706 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:57:54,706 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:57:54" (3/3) ... [2019-12-07 18:57:54,707 INFO L371 chiAutomizerObserver]: Analyzing ICFG MultCommutative-2.c [2019-12-07 18:57:54,736 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:57:54,736 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:57:54,736 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:57:54,736 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:57:54,736 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:57:54,737 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:57:54,737 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:57:54,737 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:57:54,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-12-07 18:57:54,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 18:57:54,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:57:54,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:57:54,767 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 18:57:54,767 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:57:54,767 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:57:54,767 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-12-07 18:57:54,769 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 18:57:54,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:57:54,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:57:54,770 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 18:57:54,770 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:57:54,775 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L27true assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 10#L31true assume !(main_~n~0 < 0 || main_~n~0 > 46340); 16#L34true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 4#multENTRYtrue [2019-12-07 18:57:54,775 INFO L796 eck$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 [2019-12-07 18:57:54,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:54,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1390425, now seen corresponding path program 1 times [2019-12-07 18:57:54,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:54,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346989039] [2019-12-07 18:57:54,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:54,856 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:54,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:54,857 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 1 times [2019-12-07 18:57:54,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:54,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103796071] [2019-12-07 18:57:54,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:54,865 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:54,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:54,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1527521652, now seen corresponding path program 1 times [2019-12-07 18:57:54,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:54,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807156675] [2019-12-07 18:57:54,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:57:54,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807156675] [2019-12-07 18:57:54,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:57:54,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:57:54,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962135418] [2019-12-07 18:57:54,980 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:57:54,980 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:57:54,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:57:54,981 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:57:54,981 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:57:54,981 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:54,981 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:57:54,981 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:57:54,981 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2019-12-07 18:57:54,981 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:57:54,981 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:57:54,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:54,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:54,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,048 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:57:55,048 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,053 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,053 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,060 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,060 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,067 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,067 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,071 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,074 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,074 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,080 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,080 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,088 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,088 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,095 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,095 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,098 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:57:55,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,150 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:57:55,151 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:57:55,151 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:57:55,151 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:57:55,151 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:57:55,152 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:57:55,152 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,152 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:57:55,152 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:57:55,152 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2019-12-07 18:57:55,152 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:57:55,152 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:57:55,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,192 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:57:55,196 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,199 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,203 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,203 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,206 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,209 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,211 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,211 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,211 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,213 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,216 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,218 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,218 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,218 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,220 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,223 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,224 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,225 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,225 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,230 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,233 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,234 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,237 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,239 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,239 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,239 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,239 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,241 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,244 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,246 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,247 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,247 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,248 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,248 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,250 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:57:55,253 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 18:57:55,253 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,257 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:57:55,257 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:57:55,257 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:57:55,258 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2019-12-07 18:57:55,260 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:57:55,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:55,294 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:57:55,295 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:57:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:55,307 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:57:55,307 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:57:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:57:55,335 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 18:57:55,335 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states. Second operand 4 states. [2019-12-07 18:57:55,407 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. [2019-12-07 18:57:55,407 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 [2019-12-07 18:57:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:57:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 18:57:55,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 18:57:55,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:55,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2019-12-07 18:57:55,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:55,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2019-12-07 18:57:55,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:55,413 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 65 transitions. [2019-12-07 18:57:55,416 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 18:57:55,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 31 states and 44 transitions. [2019-12-07 18:57:55,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-12-07 18:57:55,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-12-07 18:57:55,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 44 transitions. [2019-12-07 18:57:55,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:57:55,423 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2019-12-07 18:57:55,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 44 transitions. [2019-12-07 18:57:55,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2019-12-07 18:57:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 18:57:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2019-12-07 18:57:55,446 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2019-12-07 18:57:55,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:57:55,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:57:55,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:57:55,449 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 5 states. [2019-12-07 18:57:55,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:57:55,490 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2019-12-07 18:57:55,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:57:55,491 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2019-12-07 18:57:55,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 18:57:55,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 26 states and 33 transitions. [2019-12-07 18:57:55,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-12-07 18:57:55,495 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-12-07 18:57:55,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 33 transitions. [2019-12-07 18:57:55,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:57:55,496 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-12-07 18:57:55,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 33 transitions. [2019-12-07 18:57:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2019-12-07 18:57:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 18:57:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-12-07 18:57:55,500 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-12-07 18:57:55,500 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-12-07 18:57:55,500 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:57:55,500 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2019-12-07 18:57:55,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 18:57:55,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:57:55,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:57:55,502 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:57:55,502 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:57:55,502 INFO L794 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 197#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 198#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 192#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 191#multENTRY ~n := #in~n;~m := #in~m; 193#L16 assume !(~m < 0); 194#L19 assume !(0 == ~m); 187#L22 call #t~ret1 := mult(~n, ~m - 1);< 190#multENTRY [2019-12-07 18:57:55,502 INFO L796 eck$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 [2019-12-07 18:57:55,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:55,503 INFO L82 PathProgramCache]: Analyzing trace with hash -108528961, now seen corresponding path program 1 times [2019-12-07 18:57:55,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:55,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236890839] [2019-12-07 18:57:55,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:55,517 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:55,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:55,518 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 2 times [2019-12-07 18:57:55,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:55,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603416285] [2019-12-07 18:57:55,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:55,525 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:55,526 INFO L82 PathProgramCache]: Analyzing trace with hash 924096870, now seen corresponding path program 1 times [2019-12-07 18:57:55,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:55,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720725262] [2019-12-07 18:57:55,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:57:55,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720725262] [2019-12-07 18:57:55,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:57:55,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:57:55,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093033461] [2019-12-07 18:57:55,591 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:57:55,592 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:57:55,592 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:57:55,592 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:57:55,592 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:57:55,592 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,592 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:57:55,592 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:57:55,592 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2019-12-07 18:57:55,593 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:57:55,593 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:57:55,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,638 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:57:55,638 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,644 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,644 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,649 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,651 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,652 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,659 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,659 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,667 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,667 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,674 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,674 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,678 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,678 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,681 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:55,681 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:55,685 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:57:55,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:55,739 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:57:55,740 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:57:55,740 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:57:55,740 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:57:55,740 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:57:55,740 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:57:55,740 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,741 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:57:55,741 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:57:55,741 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2019-12-07 18:57:55,741 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:57:55,741 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:57:55,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:55,778 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:57:55,778 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,782 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,783 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,785 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,789 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,790 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,792 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,805 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,807 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,808 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,812 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,813 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,814 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,814 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,815 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:55,819 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,820 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,821 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,821 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,823 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/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 [2019-12-07 18:57:55,828 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:55,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:55,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:55,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:55,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:55,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:55,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:55,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:55,832 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:57:55,835 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 18:57:55,835 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/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 [2019-12-07 18:57:55,837 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:57:55,837 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:57:55,837 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:57:55,838 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2019-12-07 18:57:55,839 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:57:55,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:55,861 INFO L264 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:57:55,862 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:57:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:55,871 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:57:55,871 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:57:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:57:55,890 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 18:57:55,890 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-12-07 18:57:55,939 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. [2019-12-07 18:57:55,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-12-07 18:57:55,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:57:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2019-12-07 18:57:55,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 8 letters. Loop has 3 letters. [2019-12-07 18:57:55,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:55,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 11 letters. Loop has 3 letters. [2019-12-07 18:57:55,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:55,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 8 letters. Loop has 6 letters. [2019-12-07 18:57:55,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:55,941 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 91 transitions. [2019-12-07 18:57:55,943 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 18:57:55,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 50 states and 65 transitions. [2019-12-07 18:57:55,945 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2019-12-07 18:57:55,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2019-12-07 18:57:55,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 65 transitions. [2019-12-07 18:57:55,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:57:55,946 INFO L688 BuchiCegarLoop]: Abstraction has 50 states and 65 transitions. [2019-12-07 18:57:55,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 65 transitions. [2019-12-07 18:57:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2019-12-07 18:57:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 18:57:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2019-12-07 18:57:55,949 INFO L711 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-12-07 18:57:55,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:57:55,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:57:55,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:57:55,950 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 5 states. [2019-12-07 18:57:55,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:57:55,979 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2019-12-07 18:57:55,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 18:57:55,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 59 transitions. [2019-12-07 18:57:55,981 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-12-07 18:57:55,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 47 transitions. [2019-12-07 18:57:55,982 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-12-07 18:57:55,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-12-07 18:57:55,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 47 transitions. [2019-12-07 18:57:55,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:57:55,983 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-12-07 18:57:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 47 transitions. [2019-12-07 18:57:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-12-07 18:57:55,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-12-07 18:57:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2019-12-07 18:57:55,986 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-12-07 18:57:55,986 INFO L591 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-12-07 18:57:55,986 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:57:55,986 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 47 transitions. [2019-12-07 18:57:55,987 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-12-07 18:57:55,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:57:55,987 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:57:55,988 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:57:55,988 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:57:55,988 INFO L794 eck$LassoCheckResult]: Stem: 461#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 458#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 459#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 460#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 467#multENTRY ~n := #in~n;~m := #in~m; 479#L16 assume !(~m < 0); 476#L19 assume 0 == ~m;#res := 0; 475#multFINAL assume true; 469#multEXIT >#45#return; 466#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 451#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 452#multENTRY [2019-12-07 18:57:55,988 INFO L796 eck$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 [2019-12-07 18:57:55,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:55,988 INFO L82 PathProgramCache]: Analyzing trace with hash 922353405, now seen corresponding path program 1 times [2019-12-07 18:57:55,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:55,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337765552] [2019-12-07 18:57:55,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:55,998 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:55,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:55,999 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 3 times [2019-12-07 18:57:55,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:55,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155382425] [2019-12-07 18:57:55,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,003 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:56,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1370471320, now seen corresponding path program 1 times [2019-12-07 18:57:56,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:56,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277217066] [2019-12-07 18:57:56,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:57:56,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277217066] [2019-12-07 18:57:56,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:57:56,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:57:56,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274883101] [2019-12-07 18:57:56,049 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:57:56,049 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:57:56,049 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:57:56,049 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:57:56,049 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:57:56,049 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,049 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:57:56,049 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:57:56,049 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2019-12-07 18:57:56,049 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:57:56,049 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:57:56,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,081 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:57:56,081 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/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 [2019-12-07 18:57:56,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,087 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,087 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_c08e2917-d3f3-4644-a3f7-860774a053d6/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 [2019-12-07 18:57:56,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,093 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,093 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_c08e2917-d3f3-4644-a3f7-860774a053d6/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 [2019-12-07 18:57:56,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,097 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,100 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,100 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,106 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,107 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,111 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:57:56,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,128 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:57:56,130 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:57:56,130 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:57:56,130 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:57:56,130 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:57:56,130 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:57:56,130 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,130 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:57:56,130 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:57:56,130 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2019-12-07 18:57:56,130 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:57:56,130 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:57:56,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,159 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:57:56,159 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,162 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,164 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,168 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,169 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,171 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,175 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,177 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,181 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,182 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,184 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,189 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,190 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,191 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,191 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,193 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:57:56,194 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 18:57:56,194 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,200 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:57:56,200 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:57:56,201 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:57:56,201 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2019-12-07 18:57:56,202 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:57:56,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:56,220 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:57:56,221 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:57:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:56,236 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:57:56,237 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:57:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:57:56,249 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 [2019-12-07 18:57:56,249 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 47 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-12-07 18:57:56,297 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. [2019-12-07 18:57:56,297 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 [2019-12-07 18:57:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:57:56,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2019-12-07 18:57:56,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 11 letters. Loop has 3 letters. [2019-12-07 18:57:56,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:56,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 14 letters. Loop has 3 letters. [2019-12-07 18:57:56,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:56,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 11 letters. Loop has 6 letters. [2019-12-07 18:57:56,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:56,298 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 90 transitions. [2019-12-07 18:57:56,300 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 18:57:56,301 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 62 states and 70 transitions. [2019-12-07 18:57:56,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2019-12-07 18:57:56,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2019-12-07 18:57:56,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 70 transitions. [2019-12-07 18:57:56,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:57:56,301 INFO L688 BuchiCegarLoop]: Abstraction has 62 states and 70 transitions. [2019-12-07 18:57:56,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 70 transitions. [2019-12-07 18:57:56,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 35. [2019-12-07 18:57:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 18:57:56,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-12-07 18:57:56,304 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-12-07 18:57:56,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:57:56,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:57:56,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:57:56,304 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2019-12-07 18:57:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:57:56,320 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-12-07 18:57:56,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:57:56,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 40 transitions. [2019-12-07 18:57:56,321 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 18:57:56,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 39 transitions. [2019-12-07 18:57:56,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-12-07 18:57:56,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-12-07 18:57:56,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 39 transitions. [2019-12-07 18:57:56,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:57:56,323 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-12-07 18:57:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 39 transitions. [2019-12-07 18:57:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-12-07 18:57:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 18:57:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-12-07 18:57:56,326 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-12-07 18:57:56,326 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-12-07 18:57:56,326 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 18:57:56,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 35 transitions. [2019-12-07 18:57:56,326 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 18:57:56,326 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:57:56,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:57:56,327 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:57:56,327 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 18:57:56,327 INFO L794 eck$LassoCheckResult]: Stem: 741#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 738#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 739#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 740#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 747#multENTRY ~n := #in~n;~m := #in~m; 754#L16 assume !(~m < 0); 752#L19 assume 0 == ~m;#res := 0; 751#multFINAL assume true; 750#multEXIT >#45#return; 746#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 736#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 733#multENTRY [2019-12-07 18:57:56,327 INFO L796 eck$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 [2019-12-07 18:57:56,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:56,328 INFO L82 PathProgramCache]: Analyzing trace with hash 922353405, now seen corresponding path program 2 times [2019-12-07 18:57:56,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:56,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861138263] [2019-12-07 18:57:56,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,338 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:56,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:56,339 INFO L82 PathProgramCache]: Analyzing trace with hash 929639, now seen corresponding path program 1 times [2019-12-07 18:57:56,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:56,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437053393] [2019-12-07 18:57:56,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,343 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:56,344 INFO L82 PathProgramCache]: Analyzing trace with hash 465064035, now seen corresponding path program 1 times [2019-12-07 18:57:56,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:56,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307505014] [2019-12-07 18:57:56,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,353 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:56,382 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:57:56,382 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:57:56,382 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:57:56,382 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:57:56,382 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:57:56,382 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,382 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:57:56,382 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:57:56,382 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2019-12-07 18:57:56,382 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:57:56,383 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:57:56,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,424 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:57:56,424 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,430 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,430 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,436 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,436 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,443 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,443 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,447 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:57:56,453 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,493 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:57:56,495 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:57:56,495 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:57:56,495 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:57:56,495 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:57:56,495 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:57:56,495 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,496 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:57:56,496 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:57:56,496 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2019-12-07 18:57:56,496 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:57:56,496 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:57:56,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,535 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:57:56,536 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,538 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,540 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,540 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,540 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,541 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,542 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,545 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,547 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,547 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,547 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,549 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,552 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,555 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,556 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:57:56,558 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 18:57:56,558 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,561 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:57:56,561 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:57:56,561 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:57:56,561 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2019-12-07 18:57:56,563 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:57:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:56,581 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:57:56,582 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:57:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:56,598 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:57:56,599 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:57:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:57:56,611 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 [2019-12-07 18:57:56,611 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 35 transitions. cyclomatic complexity: 6 Second operand 5 states. [2019-12-07 18:57:56,655 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. [2019-12-07 18:57:56,655 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 [2019-12-07 18:57:56,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:57:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-12-07 18:57:56,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 4 letters. [2019-12-07 18:57:56,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:56,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 15 letters. Loop has 4 letters. [2019-12-07 18:57:56,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:56,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2019-12-07 18:57:56,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:56,656 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 45 transitions. [2019-12-07 18:57:56,657 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:57:56,658 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 15 states and 15 transitions. [2019-12-07 18:57:56,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-12-07 18:57:56,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-12-07 18:57:56,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 15 transitions. [2019-12-07 18:57:56,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:57:56,658 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 18:57:56,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 15 transitions. [2019-12-07 18:57:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 8. [2019-12-07 18:57:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 18:57:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-12-07 18:57:56,659 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-12-07 18:57:56,659 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-12-07 18:57:56,659 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 18:57:56,660 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 8 transitions. [2019-12-07 18:57:56,660 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:57:56,660 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:57:56,660 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:57:56,660 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 18:57:56,660 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 18:57:56,660 INFO L794 eck$LassoCheckResult]: Stem: 892#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 893#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 886#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 887#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 889#multENTRY [2019-12-07 18:57:56,660 INFO L796 eck$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 [2019-12-07 18:57:56,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:56,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1390425, now seen corresponding path program 2 times [2019-12-07 18:57:56,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:56,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625793577] [2019-12-07 18:57:56,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,666 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:56,666 INFO L82 PathProgramCache]: Analyzing trace with hash 929639, now seen corresponding path program 2 times [2019-12-07 18:57:56,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:56,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442212721] [2019-12-07 18:57:56,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,671 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:56,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:56,671 INFO L82 PathProgramCache]: Analyzing trace with hash -108528961, now seen corresponding path program 2 times [2019-12-07 18:57:56,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:57:56,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665638226] [2019-12-07 18:57:56,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:57:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:57:56,679 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:57:56,712 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:57:56,712 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:57:56,712 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:57:56,713 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:57:56,713 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:57:56,713 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,713 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:57:56,713 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:57:56,713 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2019-12-07 18:57:56,713 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:57:56,713 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:57:56,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,766 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:57:56,766 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,769 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,774 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,781 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,781 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,787 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,793 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,793 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:57:56,799 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_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:57:56,803 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:57:56,811 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:57:56,852 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:57:56,853 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:57:56,853 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:57:56,853 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:57:56,853 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:57:56,853 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:57:56,853 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,853 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:57:56,853 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:57:56,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2019-12-07 18:57:56,853 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:57:56,853 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:57:56,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:57:56,898 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:57:56,898 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,900 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,902 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,903 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,907 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,908 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,908 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,909 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,914 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,915 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,915 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,917 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,920 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,922 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,922 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,922 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,923 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,927 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,928 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,929 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,933 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:57:56,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:57:56,934 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:57:56,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:57:56,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:57:56,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:57:56,935 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:57:56,935 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:57:56,937 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:57:56,940 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:57:56,940 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c08e2917-d3f3-4644-a3f7-860774a053d6/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:57:56,942 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:57:56,942 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:57:56,942 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:57:56,942 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2019-12-07 18:57:56,944 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:57:56,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:57:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:56,957 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:57:56,957 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:57:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:57:56,963 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:57:56,963 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:57:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:57:56,975 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 18:57:56,976 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 8 transitions. cyclomatic complexity: 1 Second operand 4 states. [2019-12-07 18:57:56,996 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. [2019-12-07 18:57:56,996 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 [2019-12-07 18:57:56,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:57:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-12-07 18:57:56,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 18:57:56,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:56,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2019-12-07 18:57:56,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:56,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 8 letters. [2019-12-07 18:57:56,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:57:56,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 18 transitions. [2019-12-07 18:57:56,997 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:57:56,997 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2019-12-07 18:57:56,998 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:57:56,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:57:56,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:57:56,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:57:56,998 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:57:56,998 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:57:56,998 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:57:56,998 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 18:57:56,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:57:56,998 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:57:56,998 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:57:57,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:57:57 BoogieIcfgContainer [2019-12-07 18:57:57,002 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:57:57,002 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:57:57,002 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:57:57,003 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:57:57,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:57:54" (3/4) ... [2019-12-07 18:57:57,005 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:57:57,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:57:57,006 INFO L168 Benchmark]: Toolchain (without parser) took 2665.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -122.6 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:57:57,006 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:57:57,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:57:57,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:57:57,007 INFO L168 Benchmark]: Boogie Preprocessor took 10.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:57:57,007 INFO L168 Benchmark]: RCFGBuilder took 142.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:57:57,008 INFO L168 Benchmark]: BuchiAutomizer took 2299.92 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.7 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:57:57,008 INFO L168 Benchmark]: Witness Printer took 2.58 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. [2019-12-07 18:57:57,010 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 142.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2299.92 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.7 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 2.2s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. 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, 0.1s 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: 9ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 24 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...