./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive/MultCommutative-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 bbc43fe9834b77811d120f68e3a868f414cdd105 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 07:59:52,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 07:59:52,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 07:59:52,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 07:59:52,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 07:59:52,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 07:59:52,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 07:59:52,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 07:59:52,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 07:59:52,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 07:59:52,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 07:59:52,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 07:59:52,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 07:59:52,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 07:59:52,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 07:59:52,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 07:59:52,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 07:59:52,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 07:59:52,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 07:59:52,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 07:59:52,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 07:59:52,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 07:59:52,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 07:59:52,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 07:59:52,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 07:59:52,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 07:59:52,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 07:59:52,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 07:59:52,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 07:59:52,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 07:59:52,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 07:59:52,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 07:59:52,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 07:59:52,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 07:59:52,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 07:59:52,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 07:59:52,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 07:59:52,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 07:59:52,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 07:59:52,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 07:59:52,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 07:59:52,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 07:59:52,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 07:59:52,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 07:59:52,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 07:59:52,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 07:59:52,683 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 07:59:52,683 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 07:59:52,683 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 07:59:52,692 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 07:59:52,693 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 07:59:52,693 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 07:59:52,694 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 07:59:52,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 07:59:52,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 07:59:52,696 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 07:59:52,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 07:59:52,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 07:59:52,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 07:59:52,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 07:59:52,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 07:59:52,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 07:59:52,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 07:59:52,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 07:59:52,698 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 07:59:52,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 07:59:52,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 07:59:52,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 07:59:52,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 07:59:52,700 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 07:59:52,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 07:59:52,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 07:59:52,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 07:59:52,701 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 07:59:52,702 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 07:59:52,703 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> bbc43fe9834b77811d120f68e3a868f414cdd105 [2020-10-20 07:59:52,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 07:59:52,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 07:59:52,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 07:59:52,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 07:59:52,967 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 07:59:52,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2020-10-20 07:59:53,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/249bc85f7/4661b0687bc047018f5a6a48fc452496/FLAG56dbcf02c [2020-10-20 07:59:53,641 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 07:59:53,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2020-10-20 07:59:53,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/249bc85f7/4661b0687bc047018f5a6a48fc452496/FLAG56dbcf02c [2020-10-20 07:59:53,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/249bc85f7/4661b0687bc047018f5a6a48fc452496 [2020-10-20 07:59:53,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 07:59:53,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 07:59:53,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 07:59:53,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 07:59:53,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 07:59:53,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:59:53" (1/1) ... [2020-10-20 07:59:53,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617698ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:53, skipping insertion in model container [2020-10-20 07:59:53,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:59:53" (1/1) ... [2020-10-20 07:59:53,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 07:59:53,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 07:59:54,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:59:54,203 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 07:59:54,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:59:54,242 INFO L208 MainTranslator]: Completed translation [2020-10-20 07:59:54,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54 WrapperNode [2020-10-20 07:59:54,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 07:59:54,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 07:59:54,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 07:59:54,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 07:59:54,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54" (1/1) ... [2020-10-20 07:59:54,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54" (1/1) ... [2020-10-20 07:59:54,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 07:59:54,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 07:59:54,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 07:59:54,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 07:59:54,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54" (1/1) ... [2020-10-20 07:59:54,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54" (1/1) ... [2020-10-20 07:59:54,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54" (1/1) ... [2020-10-20 07:59:54,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54" (1/1) ... [2020-10-20 07:59:54,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54" (1/1) ... [2020-10-20 07:59:54,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54" (1/1) ... [2020-10-20 07:59:54,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54" (1/1) ... [2020-10-20 07:59:54,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 07:59:54,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 07:59:54,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 07:59:54,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 07:59:54,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-10-20 07:59:54,409 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-10-20 07:59:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 07:59:54,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 07:59:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 07:59:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 07:59:54,665 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 07:59:54,665 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 07:59:54,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:59:54 BoogieIcfgContainer [2020-10-20 07:59:54,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 07:59:54,668 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 07:59:54,669 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 07:59:54,672 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 07:59:54,673 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:59:54,674 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 07:59:53" (1/3) ... [2020-10-20 07:59:54,675 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ba40bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:59:54, skipping insertion in model container [2020-10-20 07:59:54,675 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:59:54,675 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:59:54" (2/3) ... [2020-10-20 07:59:54,676 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ba40bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:59:54, skipping insertion in model container [2020-10-20 07:59:54,676 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:59:54,676 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:59:54" (3/3) ... [2020-10-20 07:59:54,678 INFO L373 chiAutomizerObserver]: Analyzing ICFG MultCommutative-2.c [2020-10-20 07:59:54,732 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 07:59:54,734 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 07:59:54,734 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 07:59:54,735 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 07:59:54,738 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 07:59:54,739 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 07:59:54,739 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 07:59:54,739 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 07:59:54,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2020-10-20 07:59:54,801 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 07:59:54,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:59:54,802 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:59:54,810 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 07:59:54,810 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 07:59:54,811 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 07:59:54,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states. [2020-10-20 07:59:54,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 07:59:54,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:59:54,815 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:59:54,815 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 07:59:54,816 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 07:59:54,825 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 11#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 7#L29true assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 14#L33true assume !(main_~n~0 < 0 || main_~n~0 > 46340); 24#L36true call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 3#multENTRYtrue [2020-10-20 07:59:54,825 INFO L796 eck$LassoCheckResult]: Loop: 3#multENTRYtrue ~n := #in~n;~m := #in~m; 21#L18true assume ~m < 0; 16#L19true call #t~ret7 := mult(~n, -~m);< 3#multENTRYtrue [2020-10-20 07:59:54,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:54,832 INFO L82 PathProgramCache]: Analyzing trace with hash 42056135, now seen corresponding path program 1 times [2020-10-20 07:59:54,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:54,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11939079] [2020-10-20 07:59:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:54,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:54,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:55,014 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:55,016 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 1 times [2020-10-20 07:59:55,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:55,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500274446] [2020-10-20 07:59:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:55,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:55,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:55,046 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:55,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:55,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1236132511, now seen corresponding path program 1 times [2020-10-20 07:59:55,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:55,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492062053] [2020-10-20 07:59:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:59:55,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492062053] [2020-10-20 07:59:55,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:59:55,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 07:59:55,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711521932] [2020-10-20 07:59:55,317 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:59:55,318 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:59:55,318 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:59:55,318 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:59:55,318 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:59:55,319 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:55,319 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:59:55,319 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:59:55,319 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2020-10-20 07:59:55,319 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:59:55,319 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:59:55,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,442 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:59:55,443 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:55,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:55,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:55,466 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:55,467 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:55,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:55,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:55,559 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:55,559 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:55,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:55,596 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:55,601 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:55,601 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:55,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:55,640 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:55,646 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:55,646 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:55,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:55,693 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:55,700 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:55,700 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret8=0} Honda state: {mult_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:55,744 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:55,744 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:55,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:59:55,789 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:55,876 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:59:55,879 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:59:55,879 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:59:55,879 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:59:55,879 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:59:55,879 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:59:55,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:55,880 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:59:55,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:59:55,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2020-10-20 07:59:55,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:59:55,880 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:59:55,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:55,965 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:59:55,970 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:55,980 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 [2020-10-20 07:59:55,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:55,984 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:55,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:55,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:55,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:55,987 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:55,987 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:55,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:56,022 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 [2020-10-20 07:59:56,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:56,025 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:56,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:56,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:56,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:56,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:56,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:56,037 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:56,080 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 Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:56,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:56,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:56,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:56,083 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:56,083 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:56,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:56,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:56,087 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:56,118 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 [2020-10-20 07:59:56,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:56,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:56,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:56,127 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:56,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:56,128 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:56,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:56,132 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:56,168 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 [2020-10-20 07:59:56,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:56,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:56,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:56,171 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:56,171 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:56,172 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:56,172 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:56,180 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:56,212 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 [2020-10-20 07:59:56,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:56,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:56,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:56,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:56,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:56,215 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:56,215 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:56,225 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:56,249 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 [2020-10-20 07:59:56,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:56,252 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:56,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:56,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:56,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:56,257 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:56,258 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:56,266 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:59:56,271 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 07:59:56,271 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:56,279 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:59:56,279 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:59:56,279 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:59:56,280 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2020-10-20 07:59:56,305 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:59:56,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:56,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:59:56,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:59:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:56,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 07:59:56,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:59:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:59:56,452 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 [2020-10-20 07:59:56,454 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states. Second operand 4 states. [2020-10-20 07:59:56,657 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states.. Second operand 4 states. Result 52 states and 67 transitions. Complement of second has 12 states. [2020-10-20 07:59:56,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 07:59:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 07:59:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-20 07:59:56,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-20 07:59:56,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:56,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 3 letters. [2020-10-20 07:59:56,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:56,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 6 letters. [2020-10-20 07:59:56,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:56,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 67 transitions. [2020-10-20 07:59:56,690 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 07:59:56,709 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 32 states and 45 transitions. [2020-10-20 07:59:56,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2020-10-20 07:59:56,712 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-10-20 07:59:56,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 45 transitions. [2020-10-20 07:59:56,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:59:56,715 INFO L691 BuchiCegarLoop]: Abstraction has 32 states and 45 transitions. [2020-10-20 07:59:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 45 transitions. [2020-10-20 07:59:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-10-20 07:59:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 07:59:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2020-10-20 07:59:56,764 INFO L714 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2020-10-20 07:59:56,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:59:56,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 07:59:56,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 07:59:56,770 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 5 states. [2020-10-20 07:59:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:59:56,851 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2020-10-20 07:59:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 07:59:56,852 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-10-20 07:59:56,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 07:59:56,856 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 27 states and 34 transitions. [2020-10-20 07:59:56,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-10-20 07:59:56,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-10-20 07:59:56,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 34 transitions. [2020-10-20 07:59:56,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:59:56,859 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-10-20 07:59:56,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 34 transitions. [2020-10-20 07:59:56,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-10-20 07:59:56,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 07:59:56,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-10-20 07:59:56,873 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-10-20 07:59:56,874 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-10-20 07:59:56,874 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 07:59:56,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2020-10-20 07:59:56,878 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 07:59:56,878 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:59:56,878 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:59:56,878 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 07:59:56,879 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 07:59:56,881 INFO L794 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 207#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 200#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 201#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 196#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 195#multENTRY ~n := #in~n;~m := #in~m; 197#L18 assume !(~m < 0); 212#L21 assume !(0 == ~m); 202#L24 call #t~ret8 := mult(~n, ~m - 1);< 199#multENTRY [2020-10-20 07:59:56,881 INFO L796 eck$LassoCheckResult]: Loop: 199#multENTRY ~n := #in~n;~m := #in~m; 216#L18 assume ~m < 0; 205#L19 call #t~ret7 := mult(~n, -~m);< 199#multENTRY [2020-10-20 07:59:56,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:56,881 INFO L82 PathProgramCache]: Analyzing trace with hash 334599728, now seen corresponding path program 1 times [2020-10-20 07:59:56,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:56,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960697531] [2020-10-20 07:59:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:56,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:56,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:56,924 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:56,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:56,925 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 2 times [2020-10-20 07:59:56,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:56,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794967066] [2020-10-20 07:59:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:56,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:56,933 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:56,934 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:56,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:56,935 INFO L82 PathProgramCache]: Analyzing trace with hash -558597032, now seen corresponding path program 1 times [2020-10-20 07:59:56,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:56,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464879483] [2020-10-20 07:59:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:59:57,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464879483] [2020-10-20 07:59:57,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:59:57,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 07:59:57,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224521453] [2020-10-20 07:59:57,080 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:59:57,081 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:59:57,081 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:59:57,081 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:59:57,081 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:59:57,081 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:57,081 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:59:57,081 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:59:57,082 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2020-10-20 07:59:57,082 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:59:57,082 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:59:57,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,161 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:59:57,161 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:57,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:57,166 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:57,171 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:57,172 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:57,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:57,222 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:57,226 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:57,227 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:57,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:57,284 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:57,288 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:57,288 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:57,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:57,346 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:57,352 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:57,352 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:57,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:57,412 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:57,460 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:59:57,461 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:57,603 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:59:57,606 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:59:57,607 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:59:57,607 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:59:57,607 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:59:57,607 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:59:57,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:57,607 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:59:57,607 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:59:57,608 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2020-10-20 07:59:57,608 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:59:57,609 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:59:57,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:57,693 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:59:57,694 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:57,706 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 [2020-10-20 07:59:57,707 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:57,708 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:57,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:57,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:57,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:57,710 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:57,711 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:57,713 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:57,763 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 [2020-10-20 07:59:57,765 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:57,765 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:57,765 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:57,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:57,766 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:57,769 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:57,769 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:57,773 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:57,813 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 [2020-10-20 07:59:57,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:57,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:57,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:57,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:57,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:57,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:57,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:57,827 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:57,861 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 [2020-10-20 07:59:57,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:57,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:57,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:57,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:57,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:57,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:57,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:57,869 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:59:57,879 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 07:59:57,879 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:57,883 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:59:57,883 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:59:57,883 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:59:57,883 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:57,915 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:59:57,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:57,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 07:59:57,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:59:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:57,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 07:59:57,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:59:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:59:58,000 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 [2020-10-20 07:59:58,000 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-10-20 07:59:58,127 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 73 states and 92 transitions. Complement of second has 15 states. [2020-10-20 07:59:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 07:59:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 07:59:58,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2020-10-20 07:59:58,129 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 9 letters. Loop has 3 letters. [2020-10-20 07:59:58,129 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:58,129 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 12 letters. Loop has 3 letters. [2020-10-20 07:59:58,129 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:58,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 9 letters. Loop has 6 letters. [2020-10-20 07:59:58,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:58,131 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 92 transitions. [2020-10-20 07:59:58,134 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 07:59:58,137 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 51 states and 66 transitions. [2020-10-20 07:59:58,137 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2020-10-20 07:59:58,138 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2020-10-20 07:59:58,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 66 transitions. [2020-10-20 07:59:58,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:59:58,138 INFO L691 BuchiCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-10-20 07:59:58,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 66 transitions. [2020-10-20 07:59:58,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2020-10-20 07:59:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-20 07:59:58,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-10-20 07:59:58,145 INFO L714 BuchiCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-10-20 07:59:58,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:59:58,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 07:59:58,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 07:59:58,146 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 5 states. [2020-10-20 07:59:58,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:59:58,219 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-10-20 07:59:58,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 07:59:58,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2020-10-20 07:59:58,222 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-10-20 07:59:58,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 48 transitions. [2020-10-20 07:59:58,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-20 07:59:58,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2020-10-20 07:59:58,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 48 transitions. [2020-10-20 07:59:58,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:59:58,225 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-20 07:59:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 48 transitions. [2020-10-20 07:59:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-20 07:59:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-20 07:59:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-20 07:59:58,233 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-20 07:59:58,234 INFO L594 BuchiCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-20 07:59:58,234 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 07:59:58,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 48 transitions. [2020-10-20 07:59:58,241 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-10-20 07:59:58,241 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:59:58,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:59:58,243 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 07:59:58,243 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 07:59:58,243 INFO L794 eck$LassoCheckResult]: Stem: 481#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 480#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 472#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 473#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 483#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 489#multENTRY ~n := #in~n;~m := #in~m; 495#L18 assume !(~m < 0); 493#L21 assume 0 == ~m;#res := 0; 494#multFINAL assume true; 507#multEXIT >#48#return; 506#L36-1 main_~res1~0 := main_#t~ret11;havoc main_#t~ret11; 502#L37 call main_#t~ret12 := mult(main_~n~0, main_~m~0);< 505#multENTRY [2020-10-20 07:59:58,244 INFO L796 eck$LassoCheckResult]: Loop: 505#multENTRY ~n := #in~n;~m := #in~m; 504#L18 assume ~m < 0; 501#L19 call #t~ret7 := mult(~n, -~m);< 505#multENTRY [2020-10-20 07:59:58,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:58,245 INFO L82 PathProgramCache]: Analyzing trace with hash -560426956, now seen corresponding path program 1 times [2020-10-20 07:59:58,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:58,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106195843] [2020-10-20 07:59:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:58,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:58,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:58,278 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:58,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:58,279 INFO L82 PathProgramCache]: Analyzing trace with hash 29927, now seen corresponding path program 3 times [2020-10-20 07:59:58,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:58,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445299536] [2020-10-20 07:59:58,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:58,283 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:58,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:58,286 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:58,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:58,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1141566508, now seen corresponding path program 1 times [2020-10-20 07:59:58,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:58,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9336736] [2020-10-20 07:59:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:58,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 07:59:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:59:58,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9336736] [2020-10-20 07:59:58,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:59:58,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 07:59:58,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797374821] [2020-10-20 07:59:58,385 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:59:58,385 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:59:58,385 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:59:58,385 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:59:58,386 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:59:58,386 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:58,386 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:59:58,386 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:59:58,386 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2020-10-20 07:59:58,386 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:59:58,386 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:59:58,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,461 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:59:58,461 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:58,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:58,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:58,474 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:58,474 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret7=0} Honda state: {mult_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:58,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:58,503 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:58,505 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:58,506 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret8=0} Honda state: {mult_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:58,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:58,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:58,530 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:58,531 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:58,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:58,554 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:58,557 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:58,557 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:58,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:58,579 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:58,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:59:58,606 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:58,678 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:59:58,680 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:59:58,680 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:59:58,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:59:58,680 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:59:58,680 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:59:58,680 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:58,680 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:59:58,680 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:59:58,681 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2020-10-20 07:59:58,681 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:59:58,681 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:59:58,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:58,761 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:59:58,761 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:58,773 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 [2020-10-20 07:59:58,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:58,775 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:58,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:58,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:58,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:58,777 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:58,777 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:58,780 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:58,803 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 [2020-10-20 07:59:58,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:58,805 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:58,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:58,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:58,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:58,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:58,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:58,811 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:58,835 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 [2020-10-20 07:59:58,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:58,837 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:58,837 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:58,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:58,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:58,838 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:58,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:58,840 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:58,864 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 [2020-10-20 07:59:58,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:58,866 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:58,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:58,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:58,866 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:58,867 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:58,876 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:58,878 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:58,902 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 [2020-10-20 07:59:58,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:58,904 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:58,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:58,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:58,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:58,905 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:58,905 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:58,907 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:59:58,909 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 07:59:58,909 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:58,919 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:59:58,920 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:59:58,920 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:59:58,920 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:58,953 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:59:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:58,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 07:59:58,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:59:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:59,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 07:59:59,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:59:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:59:59,052 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 [2020-10-20 07:59:59,052 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 48 transitions. cyclomatic complexity: 9 Second operand 5 states. [2020-10-20 07:59:59,167 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 48 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 82 states and 91 transitions. Complement of second has 14 states. [2020-10-20 07:59:59,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 07:59:59,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 07:59:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-10-20 07:59:59,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 3 letters. [2020-10-20 07:59:59,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:59,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 15 letters. Loop has 3 letters. [2020-10-20 07:59:59,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:59,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 6 letters. [2020-10-20 07:59:59,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:59:59,170 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 91 transitions. [2020-10-20 07:59:59,172 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 07:59:59,174 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 63 states and 71 transitions. [2020-10-20 07:59:59,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2020-10-20 07:59:59,174 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2020-10-20 07:59:59,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 71 transitions. [2020-10-20 07:59:59,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 07:59:59,175 INFO L691 BuchiCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-10-20 07:59:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 71 transitions. [2020-10-20 07:59:59,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2020-10-20 07:59:59,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 07:59:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-20 07:59:59,180 INFO L714 BuchiCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-20 07:59:59,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:59:59,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 07:59:59,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 07:59:59,180 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2020-10-20 07:59:59,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:59:59,215 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-20 07:59:59,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 07:59:59,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 41 transitions. [2020-10-20 07:59:59,218 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 07:59:59,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 36 states and 40 transitions. [2020-10-20 07:59:59,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-20 07:59:59,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-20 07:59:59,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 40 transitions. [2020-10-20 07:59:59,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:59:59,220 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-20 07:59:59,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 40 transitions. [2020-10-20 07:59:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-20 07:59:59,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 07:59:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-20 07:59:59,223 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-20 07:59:59,223 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-20 07:59:59,223 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 07:59:59,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 36 transitions. [2020-10-20 07:59:59,224 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 07:59:59,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:59:59,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:59:59,225 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 07:59:59,225 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:59:59,226 INFO L794 eck$LassoCheckResult]: Stem: 767#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 766#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 760#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 761#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 769#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 774#multENTRY ~n := #in~n;~m := #in~m; 780#L18 assume !(~m < 0); 777#L21 assume 0 == ~m;#res := 0; 776#multFINAL assume true; 775#multEXIT >#48#return; 771#L36-1 main_~res1~0 := main_#t~ret11;havoc main_#t~ret11; 759#L37 call main_#t~ret12 := mult(main_~n~0, main_~m~0);< 756#multENTRY [2020-10-20 07:59:59,226 INFO L796 eck$LassoCheckResult]: Loop: 756#multENTRY ~n := #in~n;~m := #in~m; 758#L18 assume !(~m < 0); 768#L21 assume !(0 == ~m); 757#L24 call #t~ret8 := mult(~n, ~m - 1);< 756#multENTRY [2020-10-20 07:59:59,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:59,226 INFO L82 PathProgramCache]: Analyzing trace with hash -560426956, now seen corresponding path program 2 times [2020-10-20 07:59:59,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:59,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585119023] [2020-10-20 07:59:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:59,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:59,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:59,254 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:59,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:59,255 INFO L82 PathProgramCache]: Analyzing trace with hash 929642, now seen corresponding path program 1 times [2020-10-20 07:59:59,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:59,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869088606] [2020-10-20 07:59:59,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:59,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:59,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:59,265 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:59,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:59,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1028821475, now seen corresponding path program 1 times [2020-10-20 07:59:59,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:59:59,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594334204] [2020-10-20 07:59:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:59:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:59,279 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:59:59,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:59:59,299 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:59:59,340 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:59:59,340 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:59:59,340 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:59:59,340 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:59:59,340 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:59:59,340 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:59,341 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:59:59,341 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:59:59,341 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2020-10-20 07:59:59,341 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:59:59,341 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:59:59,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,441 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:59:59,441 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:59,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:59,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:59:59,454 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:59:59,454 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:59,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:59:59,478 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:59:59,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:59:59,505 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:59,576 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:59:59,578 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:59:59,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:59:59,578 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:59:59,578 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:59:59,579 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:59:59,579 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:59:59,579 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:59:59,579 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:59:59,579 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2020-10-20 07:59:59,579 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:59:59,579 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:59:59,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:59:59,674 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:59:59,674 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:59,678 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 [2020-10-20 07:59:59,679 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:59,679 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:59,679 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:59,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:59,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:59,680 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:59,680 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:59,682 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:59,707 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 [2020-10-20 07:59:59,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:59,708 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:59,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:59,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:59,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:59,709 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:59,709 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:59,711 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:59,734 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 [2020-10-20 07:59:59,735 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:59,735 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:59,735 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:59,735 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:59,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:59,736 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:59,736 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:59,738 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:59,762 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 [2020-10-20 07:59:59,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:59:59,763 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:59:59,774 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:59:59,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:59:59,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:59:59,776 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:59:59,776 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:59:59,778 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:59:59,780 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 07:59:59,780 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:59:59,784 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:59:59,785 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:59:59,785 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:59:59,785 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2020-10-20 07:59:59,806 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:59:59,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:59:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:59,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 07:59:59,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:59:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:59:59,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 07:59:59,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:59:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:59:59,915 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2020-10-20 07:59:59,915 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 36 transitions. cyclomatic complexity: 6 Second operand 6 states. [2020-10-20 08:00:00,018 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 36 transitions. cyclomatic complexity: 6. Second operand 6 states. Result 42 states and 46 transitions. Complement of second has 17 states. [2020-10-20 08:00:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:00,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 08:00:00,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-10-20 08:00:00,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 12 letters. Loop has 4 letters. [2020-10-20 08:00:00,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:00,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 16 letters. Loop has 4 letters. [2020-10-20 08:00:00,021 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:00,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 12 letters. Loop has 8 letters. [2020-10-20 08:00:00,021 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:00,021 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 46 transitions. [2020-10-20 08:00:00,023 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:00:00,023 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 16 states and 16 transitions. [2020-10-20 08:00:00,023 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-10-20 08:00:00,023 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-10-20 08:00:00,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 16 transitions. [2020-10-20 08:00:00,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:00:00,024 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-20 08:00:00,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 16 transitions. [2020-10-20 08:00:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 9. [2020-10-20 08:00:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 08:00:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-20 08:00:00,026 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-20 08:00:00,026 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-20 08:00:00,026 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 08:00:00,026 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 9 transitions. [2020-10-20 08:00:00,026 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:00:00,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:00:00,027 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:00:00,027 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 08:00:00,027 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 08:00:00,027 INFO L794 eck$LassoCheckResult]: Stem: 927#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 921#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 922#L29 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 929#L33 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 926#L36 call main_#t~ret11 := mult(main_~m~0, main_~n~0);< 923#multENTRY [2020-10-20 08:00:00,027 INFO L796 eck$LassoCheckResult]: Loop: 923#multENTRY ~n := #in~n;~m := #in~m; 925#L18 assume !(~m < 0); 928#L21 assume !(0 == ~m); 924#L24 call #t~ret8 := mult(~n, ~m - 1);< 923#multENTRY [2020-10-20 08:00:00,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:00,028 INFO L82 PathProgramCache]: Analyzing trace with hash 42056135, now seen corresponding path program 2 times [2020-10-20 08:00:00,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:00,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868856636] [2020-10-20 08:00:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:00,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:00,067 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:00,077 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:00:00,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:00,078 INFO L82 PathProgramCache]: Analyzing trace with hash 929642, now seen corresponding path program 2 times [2020-10-20 08:00:00,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:00,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904252859] [2020-10-20 08:00:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:00,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:00,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:00,098 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:00:00,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:00,104 INFO L82 PathProgramCache]: Analyzing trace with hash 334599728, now seen corresponding path program 2 times [2020-10-20 08:00:00,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:00,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039772725] [2020-10-20 08:00:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:00,141 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:00,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:00,171 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:00:00,235 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:00:00,235 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:00:00,235 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:00:00,235 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:00:00,235 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 08:00:00,235 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:00,235 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:00:00,235 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:00:00,236 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2020-10-20 08:00:00,236 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:00:00,236 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:00:00,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,311 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:00:00,311 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:00,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:00,319 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:00,326 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:00,326 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:00,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:00,358 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:00,361 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:00,361 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 08:00:00,385 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:00,385 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:00,388 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:00,388 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 08:00:00,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:00,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:00,414 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:00,415 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret7=0} Honda state: {mult_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 08:00:00,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:00,441 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 08:00:00,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 08:00:00,468 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:00,494 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 08:00:00,495 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:00:00,495 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:00:00,495 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:00:00,496 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:00:00,496 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:00:00,496 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:00,496 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:00:00,496 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:00:00,496 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2020-10-20 08:00:00,496 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:00:00,496 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:00:00,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:00,585 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:00:00,585 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 08:00:00,594 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 [2020-10-20 08:00:00,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:00,596 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:00,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:00,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:00,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:00,597 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:00,597 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:00,603 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 08:00:00,629 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 [2020-10-20 08:00:00,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:00,631 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:00,631 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:00,631 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:00,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:00,632 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:00,632 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:00,633 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 08:00:00,658 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 [2020-10-20 08:00:00,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:00,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:00,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:00,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:00,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:00,661 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:00,661 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:00,662 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 08:00:00,684 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 [2020-10-20 08:00:00,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:00,686 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:00,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:00,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:00,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:00,687 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:00,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:00:00,689 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:00:00,701 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 08:00:00,701 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:00:00,705 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:00:00,705 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 08:00:00,705 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:00:00,705 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:00,726 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 08:00:00,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:00,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 08:00:00,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:00,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 08:00:00,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:00:00,814 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-10-20 08:00:00,814 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 9 transitions. cyclomatic complexity: 1 Second operand 5 states. [2020-10-20 08:00:00,890 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 9 transitions. cyclomatic complexity: 1. Second operand 5 states. Result 19 states and 19 transitions. Complement of second has 15 states. [2020-10-20 08:00:00,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 08:00:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 9 transitions. [2020-10-20 08:00:00,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 08:00:00,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:00,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-20 08:00:00,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:00,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2020-10-20 08:00:00,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:00,893 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 19 transitions. [2020-10-20 08:00:00,894 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:00:00,894 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2020-10-20 08:00:00,894 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 08:00:00,894 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 08:00:00,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 08:00:00,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:00:00,894 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:00:00,894 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:00:00,894 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:00:00,894 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 08:00:00,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 08:00:00,895 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:00:00,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 08:00:00,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 08:00:00 BoogieIcfgContainer [2020-10-20 08:00:00,904 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 08:00:00,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 08:00:00,905 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 08:00:00,905 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 08:00:00,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:59:54" (3/4) ... [2020-10-20 08:00:00,909 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 08:00:00,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 08:00:00,912 INFO L168 Benchmark]: Toolchain (without parser) took 6983.11 ms. Allocated memory was 44.6 MB in the beginning and 67.6 MB in the end (delta: 23.1 MB). Free memory was 26.8 MB in the beginning and 12.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 37.5 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:00,913 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 34.1 MB. Free memory is still 13.7 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 08:00:00,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.59 ms. Allocated memory is still 44.6 MB. Free memory was 25.9 MB in the beginning and 15.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:00,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.21 ms. Allocated memory is still 44.6 MB. Free memory was 15.5 MB in the beginning and 14.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:00,915 INFO L168 Benchmark]: Boogie Preprocessor took 34.72 ms. Allocated memory was 44.6 MB in the beginning and 45.1 MB in the end (delta: 524.3 kB). Free memory was 13.8 MB in the beginning and 28.2 MB in the end (delta: -14.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:00,916 INFO L168 Benchmark]: RCFGBuilder took 343.36 ms. Allocated memory is still 45.1 MB. Free memory was 28.2 MB in the beginning and 14.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:00,917 INFO L168 Benchmark]: BuchiAutomizer took 6235.81 ms. Allocated memory was 45.1 MB in the beginning and 67.6 MB in the end (delta: 22.5 MB). Free memory was 14.6 MB in the beginning and 12.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:00,917 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 67.6 MB. Free memory is still 12.3 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 08:00:00,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 34.1 MB. Free memory is still 13.7 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 307.59 ms. Allocated memory is still 44.6 MB. Free memory was 25.9 MB in the beginning and 15.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 45.21 ms. Allocated memory is still 44.6 MB. Free memory was 15.5 MB in the beginning and 14.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 34.72 ms. Allocated memory was 44.6 MB in the beginning and 45.1 MB in the end (delta: 524.3 kB). Free memory was 13.8 MB in the beginning and 28.2 MB in the end (delta: -14.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 343.36 ms. Allocated memory is still 45.1 MB. Free memory was 28.2 MB in the beginning and 14.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 6235.81 ms. Allocated memory was 45.1 MB in the beginning and 67.6 MB in the end (delta: 22.5 MB). Free memory was 14.6 MB in the beginning and 12.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 14.3 GB. * Witness Printer took 5.28 ms. Allocated memory is still 67.6 MB. Free memory is still 12.3 MB. There was no memory consumed. Max. memory is 14.3 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 6 locations. One deterministic module has affine ranking function \old(m) and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.1s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 4.5s. Construction of modules took 0.3s. Büchi inclusion checks took 1.0s. 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 42 states and ocurred in iteration 2. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 128 SDtfs, 140 SDslu, 112 SDs, 0 SdLazy, 165 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf97 lsp79 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq163 hnf94 smp86 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...