./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive/McCarthy91-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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/McCarthy91-1.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 90ff89d2ba0517af453003604f3ee5a230759bec .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 05:43:34,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 05:43:34,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 05:43:34,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 05:43:34,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 05:43:34,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 05:43:34,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 05:43:34,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 05:43:34,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 05:43:34,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 05:43:34,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 05:43:34,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 05:43:34,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 05:43:34,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 05:43:34,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 05:43:34,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 05:43:34,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 05:43:34,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 05:43:34,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 05:43:34,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 05:43:34,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 05:43:34,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 05:43:34,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 05:43:34,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 05:43:34,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 05:43:34,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 05:43:34,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 05:43:34,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 05:43:34,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 05:43:34,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 05:43:34,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 05:43:34,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 05:43:34,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 05:43:34,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 05:43:34,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 05:43:34,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 05:43:34,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 05:43:34,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 05:43:34,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 05:43:34,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 05:43:34,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 05:43:34,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 05:43:34,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 05:43:34,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 05:43:34,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 05:43:34,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 05:43:34,809 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 05:43:34,810 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 05:43:34,810 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 05:43:34,810 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 05:43:34,811 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 05:43:34,811 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 05:43:34,811 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 05:43:34,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 05:43:34,812 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 05:43:34,812 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 05:43:34,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 05:43:34,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 05:43:34,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 05:43:34,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 05:43:34,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 05:43:34,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 05:43:34,814 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 05:43:34,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 05:43:34,814 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 05:43:34,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 05:43:34,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 05:43:34,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 05:43:34,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 05:43:34,816 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 05:43:34,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 05:43:34,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 05:43:34,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 05:43:34,817 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 05:43:34,818 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 05:43:34,819 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90ff89d2ba0517af453003604f3ee5a230759bec [2020-10-26 05:43:35,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 05:43:35,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 05:43:35,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 05:43:35,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 05:43:35,283 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 05:43:35,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/McCarthy91-1.c [2020-10-26 05:43:35,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41366fa67/77886245c03e4368b55edc51da6000a0/FLAG74ec68be8 [2020-10-26 05:43:36,040 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 05:43:36,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-1.c [2020-10-26 05:43:36,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41366fa67/77886245c03e4368b55edc51da6000a0/FLAG74ec68be8 [2020-10-26 05:43:36,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41366fa67/77886245c03e4368b55edc51da6000a0 [2020-10-26 05:43:36,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 05:43:36,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 05:43:36,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 05:43:36,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 05:43:36,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 05:43:36,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:43:36" (1/1) ... [2020-10-26 05:43:36,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa54e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36, skipping insertion in model container [2020-10-26 05:43:36,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:43:36" (1/1) ... [2020-10-26 05:43:36,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 05:43:36,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 05:43:36,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:43:36,358 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 05:43:36,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:43:36,403 INFO L208 MainTranslator]: Completed translation [2020-10-26 05:43:36,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36 WrapperNode [2020-10-26 05:43:36,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 05:43:36,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 05:43:36,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 05:43:36,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 05:43:36,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36" (1/1) ... [2020-10-26 05:43:36,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36" (1/1) ... [2020-10-26 05:43:36,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 05:43:36,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 05:43:36,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 05:43:36,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 05:43:36,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36" (1/1) ... [2020-10-26 05:43:36,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36" (1/1) ... [2020-10-26 05:43:36,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36" (1/1) ... [2020-10-26 05:43:36,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36" (1/1) ... [2020-10-26 05:43:36,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36" (1/1) ... [2020-10-26 05:43:36,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36" (1/1) ... [2020-10-26 05:43:36,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36" (1/1) ... [2020-10-26 05:43:36,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 05:43:36,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 05:43:36,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 05:43:36,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 05:43:36,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36" (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 [2020-10-26 05:43:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 05:43:36,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 05:43:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 05:43:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 05:43:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-10-26 05:43:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-10-26 05:43:36,898 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 05:43:36,899 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 05:43:36,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:43:36 BoogieIcfgContainer [2020-10-26 05:43:36,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 05:43:36,902 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 05:43:36,903 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 05:43:36,907 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 05:43:36,908 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:43:36,909 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 05:43:36" (1/3) ... [2020-10-26 05:43:36,910 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24668f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:43:36, skipping insertion in model container [2020-10-26 05:43:36,911 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:43:36,911 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:36" (2/3) ... [2020-10-26 05:43:36,912 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24668f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:43:36, skipping insertion in model container [2020-10-26 05:43:36,912 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:43:36,912 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:43:36" (3/3) ... [2020-10-26 05:43:36,914 INFO L373 chiAutomizerObserver]: Analyzing ICFG McCarthy91-1.c [2020-10-26 05:43:36,988 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 05:43:36,989 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 05:43:36,989 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 05:43:36,989 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 05:43:36,989 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 05:43:36,990 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 05:43:36,990 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 05:43:36,990 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 05:43:37,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-26 05:43:37,061 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:43:37,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:37,062 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:37,073 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:43:37,074 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:43:37,074 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 05:43:37,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-26 05:43:37,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:43:37,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:37,077 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:37,078 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:43:37,078 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:43:37,087 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(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 11#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 6#L28true call main_#t~ret10 := f91(main_~x~0);< 18#f91ENTRYtrue [2020-10-26 05:43:37,088 INFO L796 eck$LassoCheckResult]: Loop: 18#f91ENTRYtrue ~x := #in~x; 5#L18true assume !(~x > 100); 19#L21true call #t~ret7 := f91(11 + ~x);< 18#f91ENTRYtrue [2020-10-26 05:43:37,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:37,096 INFO L82 PathProgramCache]: Analyzing trace with hash 29879, now seen corresponding path program 1 times [2020-10-26 05:43:37,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:37,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668802371] [2020-10-26 05:43:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:37,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:37,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:37,262 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:37,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:37,265 INFO L82 PathProgramCache]: Analyzing trace with hash 46807, now seen corresponding path program 1 times [2020-10-26 05:43:37,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:37,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73608796] [2020-10-26 05:43:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:37,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:37,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:37,282 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:37,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:37,285 INFO L82 PathProgramCache]: Analyzing trace with hash 890142305, now seen corresponding path program 1 times [2020-10-26 05:43:37,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:37,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649532531] [2020-10-26 05:43:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:37,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:37,331 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:37,342 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:37,543 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:37,544 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:37,545 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:37,545 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:37,545 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:43:37,545 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:37,546 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:37,546 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:37,546 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2020-10-26 05:43:37,546 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:37,547 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:37,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:37,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:37,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:37,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:37,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:37,713 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:37,714 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 [2020-10-26 05:43:37,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:37,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:37,742 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:37,743 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:37,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:37,770 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:37,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:37,775 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-10-26 05:43:37,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:37,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:37,809 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:37,809 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret8=0} Honda state: {f91_#t~ret8=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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:37,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:37,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:37,847 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:37,847 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret7=0} Honda state: {f91_#t~ret7=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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:37,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:37,879 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:37,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:43:37,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:38,830 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:43:38,833 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:38,833 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:38,833 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:38,833 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:38,834 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:43:38,834 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:38,834 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:38,834 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:38,835 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration1_Loop [2020-10-26 05:43:38,835 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:38,835 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:38,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:38,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:38,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:38,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:38,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:38,909 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:38,916 INFO L489 LassoAnalysis]: Using template 'affine'. 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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:38,923 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 [2020-10-26 05:43:38,927 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:38,927 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:38,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:38,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:38,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:38,930 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:38,930 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:38,933 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 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 [2020-10-26 05:43:38,962 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 [2020-10-26 05:43:38,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:38,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:38,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:38,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:38,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:38,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:38,972 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:38,977 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 [2020-10-26 05:43:39,012 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 [2020-10-26 05:43:39,014 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:39,015 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:39,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:39,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:39,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:39,016 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:39,016 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:39,020 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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:39,046 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 [2020-10-26 05:43:39,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:39,048 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:39,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:39,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:39,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:39,050 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:39,050 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:39,053 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 [2020-10-26 05:43:39,079 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 [2020-10-26 05:43:39,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:39,081 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:39,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:39,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:39,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:39,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:39,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:39,086 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:43:39,091 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:43:39,091 INFO L444 ModelExtractionUtils]: 0 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 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 [2020-10-26 05:43:39,096 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:43:39,096 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:43:39,096 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:43:39,097 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2020-10-26 05:43:39,120 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:43:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:39,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 05:43:39,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:39,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:43:39,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:39,302 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 [2020-10-26 05:43:39,303 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2020-10-26 05:43:39,439 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 35 states and 43 transitions. Complement of second has 12 states. [2020-10-26 05:43:39,440 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 [2020-10-26 05:43:39,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 05:43:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-26 05:43:39,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-10-26 05:43:39,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:39,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-26 05:43:39,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:39,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-26 05:43:39,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:39,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2020-10-26 05:43:39,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:43:39,459 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 25 transitions. [2020-10-26 05:43:39,460 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-26 05:43:39,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-26 05:43:39,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2020-10-26 05:43:39,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:43:39,463 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-10-26 05:43:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2020-10-26 05:43:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-10-26 05:43:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-26 05:43:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-10-26 05:43:39,497 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-10-26 05:43:39,497 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-10-26 05:43:39,498 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 05:43:39,498 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2020-10-26 05:43:39,499 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:43:39,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:39,500 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:39,501 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 05:43:39,501 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-26 05:43:39,502 INFO L794 eck$LassoCheckResult]: Stem: 107#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(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 105#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 106#L28 call main_#t~ret10 := f91(main_~x~0);< 116#f91ENTRY ~x := #in~x; 111#L18 assume !(~x > 100); 109#L21 call #t~ret7 := f91(11 + ~x);< 119#f91ENTRY ~x := #in~x; 108#L18 assume ~x > 100;#res := ~x - 10; 110#f91FINAL assume true; 117#f91EXIT >#29#return; 114#L21-1 [2020-10-26 05:43:39,502 INFO L796 eck$LassoCheckResult]: Loop: 114#L21-1 call #t~ret8 := f91(#t~ret7);< 118#f91ENTRY ~x := #in~x; 121#L18 assume !(~x > 100); 113#L21 call #t~ret7 := f91(11 + ~x);< 118#f91ENTRY ~x := #in~x; 121#L18 assume ~x > 100;#res := ~x - 10; 115#f91FINAL assume true; 120#f91EXIT >#29#return; 114#L21-1 [2020-10-26 05:43:39,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:39,503 INFO L82 PathProgramCache]: Analyzing trace with hash -218206616, now seen corresponding path program 1 times [2020-10-26 05:43:39,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:39,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455480180] [2020-10-26 05:43:39,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,535 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,541 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:39,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1767505954, now seen corresponding path program 1 times [2020-10-26 05:43:39,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:39,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576472082] [2020-10-26 05:43:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,555 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,557 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:39,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1919740023, now seen corresponding path program 1 times [2020-10-26 05:43:39,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:39,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253495139] [2020-10-26 05:43:39,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,657 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:39,818 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:39,818 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:39,818 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:39,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:39,819 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:43:39,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:39,822 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:39,822 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:39,822 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2020-10-26 05:43:39,822 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:39,822 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:39,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:39,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:39,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:39,914 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:39,916 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-26 05:43:39,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:39,924 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:39,930 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:39,930 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret8=0} Honda state: {f91_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-10-26 05:43:39,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:39,966 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) [2020-10-26 05:43:40,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:43:40,044 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:52,140 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-10-26 05:43:52,145 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:52,146 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:52,146 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:52,146 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:52,146 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:43:52,146 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:52,146 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:52,146 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:52,146 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration2_Loop [2020-10-26 05:43:52,146 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:52,147 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:52,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:52,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:52,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:52,222 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:52,223 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-26 05:43:52,239 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 [2020-10-26 05:43:52,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:52,242 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:52,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:52,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:52,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:52,243 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:52,244 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:52,256 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:52,306 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 [2020-10-26 05:43:52,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:52,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:52,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:52,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:52,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:52,313 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:52,313 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:52,318 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:43:52,323 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:43:52,323 INFO L444 ModelExtractionUtils]: 2 out of 5 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:52,327 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:43:52,327 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:43:52,328 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:43:52,328 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret7) = -2*f91_#t~ret7 + 201 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:52,364 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:43:52,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:52,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 05:43:52,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:52,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 05:43:52,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:52,812 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-26 05:43:52,812 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand 9 states. [2020-10-26 05:43:53,182 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand 9 states. Result 51 states and 73 transitions. Complement of second has 32 states. [2020-10-26 05:43:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-26 05:43:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 05:43:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2020-10-26 05:43:53,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2020-10-26 05:43:53,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:53,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2020-10-26 05:43:53,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:53,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2020-10-26 05:43:53,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:53,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2020-10-26 05:43:53,205 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-26 05:43:53,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2020-10-26 05:43:53,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-10-26 05:43:53,215 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-10-26 05:43:53,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2020-10-26 05:43:53,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:43:53,217 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 62 transitions. [2020-10-26 05:43:53,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2020-10-26 05:43:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-26 05:43:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 05:43:53,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-10-26 05:43:53,232 INFO L714 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-10-26 05:43:53,232 INFO L594 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-10-26 05:43:53,232 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 05:43:53,232 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2020-10-26 05:43:53,236 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-26 05:43:53,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:53,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:53,238 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 05:43:53,238 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:43:53,238 INFO L794 eck$LassoCheckResult]: Stem: 293#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(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 291#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 292#L28 call main_#t~ret10 := f91(main_~x~0);< 298#f91ENTRY ~x := #in~x; 296#L18 assume !(~x > 100); 297#L21 call #t~ret7 := f91(11 + ~x);< 316#f91ENTRY ~x := #in~x; 317#L18 assume ~x > 100;#res := ~x - 10; 308#f91FINAL assume true; 309#f91EXIT >#29#return; 301#L21-1 call #t~ret8 := f91(#t~ret7);< 314#f91ENTRY ~x := #in~x; 326#L18 assume !(~x > 100); 295#L21 [2020-10-26 05:43:53,238 INFO L796 eck$LassoCheckResult]: Loop: 295#L21 call #t~ret7 := f91(11 + ~x);< 315#f91ENTRY ~x := #in~x; 294#L18 assume !(~x > 100); 295#L21 [2020-10-26 05:43:53,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:53,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1987218266, now seen corresponding path program 2 times [2020-10-26 05:43:53,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:53,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762032602] [2020-10-26 05:43:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:53,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:53,276 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:53,281 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:53,282 INFO L82 PathProgramCache]: Analyzing trace with hash 57247, now seen corresponding path program 2 times [2020-10-26 05:43:53,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:53,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598372028] [2020-10-26 05:43:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:53,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:53,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:53,289 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:53,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:53,290 INFO L82 PathProgramCache]: Analyzing trace with hash -609818202, now seen corresponding path program 3 times [2020-10-26 05:43:53,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:53,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984702718] [2020-10-26 05:43:53,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:53,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-26 05:43:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 05:43:53,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984702718] [2020-10-26 05:43:53,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 05:43:53,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 05:43:53,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081584207] [2020-10-26 05:43:53,450 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:53,450 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:53,450 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:53,450 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:53,450 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:43:53,450 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:53,450 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:53,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:53,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2020-10-26 05:43:53,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:53,451 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:53,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:53,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:53,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:53,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:53,508 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:53,508 INFO L404 LassoAnalysis]: Checking for nontermination... 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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:53,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:53,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:53,522 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:53,522 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:53,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:53,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:53,549 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:53,549 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret8=0} Honda state: {f91_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:53,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:53,576 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:53,584 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:53,585 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret7=0} Honda state: {f91_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) [2020-10-26 05:43:53,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:53,625 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:53,681 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:43:53,681 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:44:05,742 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-10-26 05:44:05,746 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:05,746 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:05,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:05,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:05,747 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:44:05,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:05,747 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:05,747 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:05,747 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration3_Loop [2020-10-26 05:44:05,747 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:05,747 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:05,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:05,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:05,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:05,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:05,926 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:05,927 INFO L489 LassoAnalysis]: Using template 'affine'. 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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:05,940 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 [2020-10-26 05:44:05,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:05,942 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:05,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:05,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:05,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:05,944 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:05,944 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:05,947 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:05,975 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 [2020-10-26 05:44:05,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:05,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:05,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:05,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:05,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:05,978 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:05,978 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:05,979 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:06,004 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:06,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:06,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:06,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:06,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:06,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:06,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:06,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:06,010 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 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 [2020-10-26 05:44:06,038 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:06,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:06,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:06,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:06,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:06,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:06,043 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:06,043 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:06,046 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:44:06,055 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:44:06,055 INFO L444 ModelExtractionUtils]: 1 out of 4 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 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 [2020-10-26 05:44:06,060 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:44:06,060 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:44:06,060 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:44:06,061 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2020-10-26 05:44:06,093 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:44:06,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:06,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 05:44:06,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:06,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:44:06,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:06,232 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 [2020-10-26 05:44:06,232 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-26 05:44:06,370 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 43 states and 59 transitions. Complement of second has 13 states. [2020-10-26 05:44:06,371 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 [2020-10-26 05:44:06,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 05:44:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2020-10-26 05:44:06,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 05:44:06,372 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:06,372 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:06,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:06,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 05:44:06,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:06,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:44:06,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:06,500 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-26 05:44:06,500 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-26 05:44:06,598 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 43 states and 59 transitions. Complement of second has 13 states. [2020-10-26 05:44:06,599 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 [2020-10-26 05:44:06,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 05:44:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2020-10-26 05:44:06,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 05:44:06,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:06,600 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:06,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:06,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 05:44:06,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:06,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:44:06,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:06,719 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-26 05:44:06,720 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-26 05:44:06,825 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 71 states and 100 transitions. Complement of second has 16 states. [2020-10-26 05:44:06,826 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 [2020-10-26 05:44:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 05:44:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2020-10-26 05:44:06,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 05:44:06,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:06,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2020-10-26 05:44:06,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:06,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-26 05:44:06,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:06,829 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2020-10-26 05:44:06,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-26 05:44:06,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2020-10-26 05:44:06,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-10-26 05:44:06,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-10-26 05:44:06,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2020-10-26 05:44:06,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:44:06,836 INFO L691 BuchiCegarLoop]: Abstraction has 48 states and 74 transitions. [2020-10-26 05:44:06,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2020-10-26 05:44:06,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-10-26 05:44:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 05:44:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2020-10-26 05:44:06,843 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 60 transitions. [2020-10-26 05:44:06,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 05:44:06,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 05:44:06,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-26 05:44:06,849 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 8 states. [2020-10-26 05:44:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 05:44:07,028 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2020-10-26 05:44:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 05:44:07,029 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2020-10-26 05:44:07,034 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-10-26 05:44:07,041 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2020-10-26 05:44:07,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-26 05:44:07,042 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2020-10-26 05:44:07,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2020-10-26 05:44:07,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:44:07,043 INFO L691 BuchiCegarLoop]: Abstraction has 58 states and 75 transitions. [2020-10-26 05:44:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2020-10-26 05:44:07,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-26 05:44:07,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-26 05:44:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2020-10-26 05:44:07,059 INFO L714 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-10-26 05:44:07,059 INFO L594 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-10-26 05:44:07,059 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 05:44:07,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2020-10-26 05:44:07,067 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-10-26 05:44:07,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:44:07,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:44:07,070 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-26 05:44:07,070 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2020-10-26 05:44:07,071 INFO L794 eck$LassoCheckResult]: Stem: 839#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(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 837#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 838#L28 call main_#t~ret10 := f91(main_~x~0);< 851#f91ENTRY ~x := #in~x; 883#L18 assume !(~x > 100); 866#L21 call #t~ret7 := f91(11 + ~x);< 867#f91ENTRY ~x := #in~x; 876#L18 assume !(~x > 100); 872#L21 call #t~ret7 := f91(11 + ~x);< 874#f91ENTRY ~x := #in~x; 877#L18 assume ~x > 100;#res := ~x - 10; 875#f91FINAL assume true; 873#f91EXIT >#29#return; 849#L21-1 call #t~ret8 := f91(#t~ret7);< 861#f91ENTRY ~x := #in~x; 891#L18 assume ~x > 100;#res := ~x - 10; 890#f91FINAL assume true; 887#f91EXIT >#31#return; 868#L21-2 #res := #t~ret8;havoc #t~ret8;havoc #t~ret7; 885#f91FINAL assume true; 884#f91EXIT >#29#return; 853#L21-1 call #t~ret8 := f91(#t~ret7);< 882#f91ENTRY [2020-10-26 05:44:07,071 INFO L796 eck$LassoCheckResult]: Loop: 882#f91ENTRY ~x := #in~x; 879#L18 assume !(~x > 100); 841#L21 call #t~ret7 := f91(11 + ~x);< 865#f91ENTRY ~x := #in~x; 844#L18 assume !(~x > 100); 842#L21 call #t~ret7 := f91(11 + ~x);< 878#f91ENTRY ~x := #in~x; 840#L18 assume ~x > 100;#res := ~x - 10; 843#f91FINAL assume true; 893#f91EXIT >#29#return; 846#L21-1 call #t~ret8 := f91(#t~ret7);< 859#f91ENTRY ~x := #in~x; 880#L18 assume ~x > 100;#res := ~x - 10; 881#f91FINAL assume true; 886#f91EXIT >#31#return; 868#L21-2 #res := #t~ret8;havoc #t~ret8;havoc #t~ret7; 885#f91FINAL assume true; 884#f91EXIT >#29#return; 854#L21-1 call #t~ret8 := f91(#t~ret7);< 882#f91ENTRY [2020-10-26 05:44:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:07,072 INFO L82 PathProgramCache]: Analyzing trace with hash -834951989, now seen corresponding path program 1 times [2020-10-26 05:44:07,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:07,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561967258] [2020-10-26 05:44:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:07,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:07,145 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:07,151 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:07,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:07,155 INFO L82 PathProgramCache]: Analyzing trace with hash -871747263, now seen corresponding path program 1 times [2020-10-26 05:44:07,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:07,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415062244] [2020-10-26 05:44:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:07,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:07,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:07,186 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:07,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:07,188 INFO L82 PathProgramCache]: Analyzing trace with hash 418853943, now seen corresponding path program 2 times [2020-10-26 05:44:07,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:07,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820796965] [2020-10-26 05:44:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:07,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-26 05:44:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:07,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-26 05:44:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:07,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 05:44:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:07,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 05:44:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:07,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-26 05:44:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:07,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 05:44:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-26 05:44:07,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820796965] [2020-10-26 05:44:07,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919093272] [2020-10-26 05:44:07,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 05:44:07,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 05:44:07,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 05:44:07,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 05:44:07,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-26 05:44:07,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 05:44:07,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-26 05:44:07,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318644225] [2020-10-26 05:44:07,868 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:07,868 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:07,868 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:07,868 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:07,869 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:44:07,869 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:07,869 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:07,869 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:07,869 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2020-10-26 05:44:07,869 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:07,869 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:07,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:07,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:07,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:07,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:07,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:07,944 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:07,945 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-26 05:44:07,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:07,950 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:07,955 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:07,955 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret7=0} Honda state: {f91_#t~ret7=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 [2020-10-26 05:44:07,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:07,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:44:07,996 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:07,996 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-10-26 05:44:08,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:08,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:44:08,031 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:08,031 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:08,055 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-26 05:44:08,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:44:08,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:44:08,699 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:44:08,702 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:08,702 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:08,702 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:08,702 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:08,702 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:44:08,702 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,702 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:08,702 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:08,702 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration4_Loop [2020-10-26 05:44:08,702 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:08,703 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:08,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:08,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:08,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:08,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:08,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:08,770 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:08,771 INFO L489 LassoAnalysis]: Using template 'affine'. 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 [2020-10-26 05:44:08,775 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 [2020-10-26 05:44:08,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:08,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:08,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:08,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:08,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:08,778 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:08,778 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:08,779 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) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,817 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 [2020-10-26 05:44:08,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:08,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:08,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:08,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:08,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:08,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:08,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:08,826 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) [2020-10-26 05:44:08,861 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 [2020-10-26 05:44:08,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:08,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:08,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:08,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:08,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:08,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:08,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,867 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,895 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 [2020-10-26 05:44:08,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:08,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:08,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:08,896 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:08,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:08,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:08,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:08,900 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:44:08,903 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:44:08,903 INFO L444 ModelExtractionUtils]: 0 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 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 [2020-10-26 05:44:08,907 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:44:08,908 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:44:08,908 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:44:08,908 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2020-10-26 05:44:08,931 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:44:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:09,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-26 05:44:09,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:09,056 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:09,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:09,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-26 05:44:09,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 05:44:09,413 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2020-10-26 05:44:09,413 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2020-10-26 05:44:09,986 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 125 states and 150 transitions. Complement of second has 47 states. [2020-10-26 05:44:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 05:44:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2020-10-26 05:44:09,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-26 05:44:09,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:09,990 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:10,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:10,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-26 05:44:10,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:10,087 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:10,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:10,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-26 05:44:10,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 05:44:10,343 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2020-10-26 05:44:10,343 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2020-10-26 05:44:10,991 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 125 states and 150 transitions. Complement of second has 47 states. [2020-10-26 05:44:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 05:44:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2020-10-26 05:44:10,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-26 05:44:10,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:10,996 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:11,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:11,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-26 05:44:11,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:11,093 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:11,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:11,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 05:44:11,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 05:44:11,316 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 9 loop predicates [2020-10-26 05:44:11,316 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 11 states. [2020-10-26 05:44:12,260 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 11 states. Result 325 states and 417 transitions. Complement of second has 123 states. [2020-10-26 05:44:12,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 18 states 2 stem states 15 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-26 05:44:12,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 49 transitions. [2020-10-26 05:44:12,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-26 05:44:12,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:12,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 41 letters. Loop has 19 letters. [2020-10-26 05:44:12,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:12,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 22 letters. Loop has 38 letters. [2020-10-26 05:44:12,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:12,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 325 states and 417 transitions. [2020-10-26 05:44:12,299 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2020-10-26 05:44:12,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 325 states to 169 states and 230 transitions. [2020-10-26 05:44:12,306 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 81 [2020-10-26 05:44:12,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2020-10-26 05:44:12,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 230 transitions. [2020-10-26 05:44:12,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:44:12,307 INFO L691 BuchiCegarLoop]: Abstraction has 169 states and 230 transitions. [2020-10-26 05:44:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 230 transitions. [2020-10-26 05:44:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-10-26 05:44:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-26 05:44:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 178 transitions. [2020-10-26 05:44:12,336 INFO L714 BuchiCegarLoop]: Abstraction has 140 states and 178 transitions. [2020-10-26 05:44:12,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 05:44:12,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 05:44:12,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-26 05:44:12,338 INFO L87 Difference]: Start difference. First operand 140 states and 178 transitions. Second operand 10 states. [2020-10-26 05:44:12,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 05:44:12,686 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2020-10-26 05:44:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 05:44:12,688 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 163 transitions. [2020-10-26 05:44:12,690 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:44:12,693 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 101 states and 121 transitions. [2020-10-26 05:44:12,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2020-10-26 05:44:12,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2020-10-26 05:44:12,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 121 transitions. [2020-10-26 05:44:12,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:44:12,694 INFO L691 BuchiCegarLoop]: Abstraction has 101 states and 121 transitions. [2020-10-26 05:44:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 121 transitions. [2020-10-26 05:44:12,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2020-10-26 05:44:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-26 05:44:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2020-10-26 05:44:12,703 INFO L714 BuchiCegarLoop]: Abstraction has 97 states and 117 transitions. [2020-10-26 05:44:12,703 INFO L594 BuchiCegarLoop]: Abstraction has 97 states and 117 transitions. [2020-10-26 05:44:12,703 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 05:44:12,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 117 transitions. [2020-10-26 05:44:12,704 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:44:12,705 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:44:12,705 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:44:12,706 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [8, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-10-26 05:44:12,706 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-26 05:44:12,706 INFO L794 eck$LassoCheckResult]: Stem: 2644#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(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2642#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 2643#L28 call main_#t~ret10 := f91(main_~x~0);< 2656#f91ENTRY ~x := #in~x; 2649#L18 assume !(~x > 100); 2650#L21 call #t~ret7 := f91(11 + ~x);< 2668#f91ENTRY ~x := #in~x; 2670#L18 assume !(~x > 100); 2669#L21 call #t~ret7 := f91(11 + ~x);< 2698#f91ENTRY ~x := #in~x; 2700#L18 assume ~x > 100;#res := ~x - 10; 2699#f91FINAL assume true; 2697#f91EXIT >#29#return; 2693#L21-1 call #t~ret8 := f91(#t~ret7);< 2696#f91ENTRY ~x := #in~x; 2709#L18 assume ~x > 100;#res := ~x - 10; 2701#f91FINAL assume true; 2692#f91EXIT >#31#return; 2691#L21-2 #res := #t~ret8;havoc #t~ret8;havoc #t~ret7; 2689#f91FINAL assume true; 2688#f91EXIT >#29#return; 2682#L21-1 call #t~ret8 := f91(#t~ret7);< 2687#f91ENTRY ~x := #in~x; 2685#L18 assume !(~x > 100); 2663#L21 call #t~ret7 := f91(11 + ~x);< 2684#f91ENTRY ~x := #in~x; 2708#L18 assume ~x > 100;#res := ~x - 10; 2707#f91FINAL assume true; 2706#f91EXIT >#29#return; 2704#L21-1 call #t~ret8 := f91(#t~ret7);< 2705#f91ENTRY ~x := #in~x; 2720#L18 assume !(~x > 100); 2721#L21 call #t~ret7 := f91(11 + ~x);< 2672#f91ENTRY ~x := #in~x; 2738#L18 assume ~x > 100;#res := ~x - 10; 2736#f91FINAL assume true; 2729#f91EXIT >#29#return; 2654#L21-1 call #t~ret8 := f91(#t~ret7);< 2728#f91ENTRY [2020-10-26 05:44:12,706 INFO L796 eck$LassoCheckResult]: Loop: 2728#f91ENTRY ~x := #in~x; 2732#L18 assume !(~x > 100); 2730#L21 call #t~ret7 := f91(11 + ~x);< 2672#f91ENTRY ~x := #in~x; 2738#L18 assume ~x > 100;#res := ~x - 10; 2736#f91FINAL assume true; 2729#f91EXIT >#29#return; 2653#L21-1 call #t~ret8 := f91(#t~ret7);< 2728#f91ENTRY [2020-10-26 05:44:12,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:12,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1139827145, now seen corresponding path program 3 times [2020-10-26 05:44:12,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:12,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424137658] [2020-10-26 05:44:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:12,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:12,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:12,748 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:12,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:12,749 INFO L82 PathProgramCache]: Analyzing trace with hash 31195136, now seen corresponding path program 2 times [2020-10-26 05:44:12,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:12,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868037978] [2020-10-26 05:44:12,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:12,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:12,756 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:12,757 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:12,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:12,758 INFO L82 PathProgramCache]: Analyzing trace with hash 424810952, now seen corresponding path program 4 times [2020-10-26 05:44:12,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:12,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809208004] [2020-10-26 05:44:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:12,771 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:12,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:12,808 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:12,920 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:12,920 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:12,920 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:12,920 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:12,920 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:44:12,920 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:12,920 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:12,921 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:12,921 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2020-10-26 05:44:12,921 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:12,921 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:12,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:12,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:12,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:12,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:12,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:12,989 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:12,990 INFO L404 LassoAnalysis]: Checking for nontermination... 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 [2020-10-26 05:44:12,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:12,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:44:12,999 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:12,999 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:13,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:13,022 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-26 05:44:13,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:44:13,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:44:13,059 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:44:13,080 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:13,080 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:13,080 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:13,081 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:13,081 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:44:13,081 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:13,081 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:13,081 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:13,081 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-1.c_Iteration5_Loop [2020-10-26 05:44:13,081 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:13,081 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:13,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:13,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:13,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:13,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:13,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:13,142 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:13,142 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-26 05:44:13,156 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 [2020-10-26 05:44:13,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:13,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:13,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:13,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:13,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:13,159 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:13,159 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:13,161 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) [2020-10-26 05:44:13,197 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 [2020-10-26 05:44:13,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:13,199 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:13,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:13,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:13,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:13,200 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:13,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:13,203 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:44:13,207 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:44:13,207 INFO L444 ModelExtractionUtils]: 0 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:13,212 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:44:13,212 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:44:13,212 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:44:13,213 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 201 Supporting invariants [] Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:13,247 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:44:13,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:13,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 05:44:13,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:13,377 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:13,382 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:13,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 05:44:13,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:13,585 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-26 05:44:13,586 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-26 05:44:13,751 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 107 states and 127 transitions. Complement of second has 12 states. [2020-10-26 05:44:13,755 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 [2020-10-26 05:44:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 05:44:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-10-26 05:44:13,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 38 letters. Loop has 8 letters. [2020-10-26 05:44:13,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:13,756 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:13,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:13,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 05:44:13,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:13,875 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:13,883 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:13,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 05:44:13,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:14,058 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-26 05:44:14,059 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-26 05:44:14,419 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 125 states and 146 transitions. Complement of second has 24 states. [2020-10-26 05:44:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:14,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 05:44:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 20 transitions. [2020-10-26 05:44:14,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 20 transitions. Stem has 38 letters. Loop has 8 letters. [2020-10-26 05:44:14,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:14,424 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:14,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 05:44:14,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:14,564 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:14,573 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:14,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 05:44:14,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:14,739 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-26 05:44:14,739 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-26 05:44:14,897 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 147 states and 167 transitions. Complement of second has 13 states. [2020-10-26 05:44:14,899 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 [2020-10-26 05:44:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 05:44:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-10-26 05:44:14,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 38 letters. Loop has 8 letters. [2020-10-26 05:44:14,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:14,900 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:14,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:14,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 05:44:14,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:15,021 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:15,025 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:15,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 05:44:15,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:15,181 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-26 05:44:15,182 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-26 05:44:15,725 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 182 states and 209 transitions. Complement of second has 48 states. [2020-10-26 05:44:15,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:15,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 05:44:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 27 transitions. [2020-10-26 05:44:15,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 38 letters. Loop has 8 letters. [2020-10-26 05:44:15,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:15,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 46 letters. Loop has 8 letters. [2020-10-26 05:44:15,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:15,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 38 letters. Loop has 16 letters. [2020-10-26 05:44:15,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:15,729 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 209 transitions. [2020-10-26 05:44:15,732 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:44:15,732 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 0 states and 0 transitions. [2020-10-26 05:44:15,732 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 05:44:15,732 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 05:44:15,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 05:44:15,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 05:44:15,732 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:44:15,732 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:44:15,732 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:44:15,732 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-26 05:44:15,732 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 05:44:15,733 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:44:15,733 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 05:44:15,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 05:44:15 BoogieIcfgContainer [2020-10-26 05:44:15,739 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 05:44:15,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 05:44:15,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 05:44:15,740 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 05:44:15,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:43:36" (3/4) ... [2020-10-26 05:44:15,744 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 05:44:15,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 05:44:15,746 INFO L168 Benchmark]: Toolchain (without parser) took 39675.82 ms. Allocated memory was 39.8 MB in the beginning and 130.0 MB in the end (delta: 90.2 MB). Free memory was 17.4 MB in the beginning and 68.4 MB in the end (delta: -51.0 MB). Peak memory consumption was 37.8 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:15,746 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 39.8 MB. Free memory was 24.1 MB in the beginning and 24.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:44:15,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.57 ms. Allocated memory was 39.8 MB in the beginning and 50.3 MB in the end (delta: 10.5 MB). Free memory was 16.7 MB in the beginning and 28.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:15,754 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.19 ms. Allocated memory is still 50.3 MB. Free memory was 28.1 MB in the beginning and 26.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:15,754 INFO L168 Benchmark]: Boogie Preprocessor took 41.54 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 25.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:44:15,756 INFO L168 Benchmark]: RCFGBuilder took 399.99 ms. Allocated memory is still 50.3 MB. Free memory was 25.8 MB in the beginning and 25.4 MB in the end (delta: 363.2 kB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:15,758 INFO L168 Benchmark]: BuchiAutomizer took 38836.46 ms. Allocated memory was 50.3 MB in the beginning and 130.0 MB in the end (delta: 79.7 MB). Free memory was 25.2 MB in the beginning and 68.4 MB in the end (delta: -43.2 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:15,758 INFO L168 Benchmark]: Witness Printer took 4.57 ms. Allocated memory is still 130.0 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:44:15,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 39.8 MB. Free memory was 24.1 MB in the beginning and 24.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.57 ms. Allocated memory was 39.8 MB in the beginning and 50.3 MB in the end (delta: 10.5 MB). Free memory was 16.7 MB in the beginning and 28.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.19 ms. Allocated memory is still 50.3 MB. Free memory was 28.1 MB in the beginning and 26.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.54 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 25.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 399.99 ms. Allocated memory is still 50.3 MB. Free memory was 25.8 MB in the beginning and 25.4 MB in the end (delta: 363.2 kB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 38836.46 ms. Allocated memory was 50.3 MB in the beginning and 130.0 MB in the end (delta: 79.7 MB). Free memory was 25.2 MB in the beginning and 68.4 MB in the end (delta: -43.2 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.57 ms. Allocated memory is still 130.0 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * \old(x) + 211 and consists of 4 locations. One deterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. One nondeterministic module has affine ranking function -2 * x + 189 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * \old(x) + 90 and consists of 18 locations. One nondeterministic module has affine ranking function -2 * \old(x) + 201 and consists of 11 locations. 2 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 38.7s and 6 iterations. TraceHistogramMax:8. Analysis of lassos took 30.1s. Construction of modules took 1.1s. Büchi inclusion checks took 7.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 48 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 97 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 2, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 10/24 HoareTripleCheckerStatistics: 181 SDtfs, 296 SDslu, 190 SDs, 0 SdLazy, 829 SolverSat, 238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf90 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf110 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 26.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...