./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 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/bitvector/gcd_4.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 679f2fe8d678884423b2dff47bf2c3c7ede0374b3a8bb68f9a9e8a332d8776ef --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:13:46,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:13:46,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:13:46,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:13:46,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:13:46,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:13:46,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:13:46,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:13:46,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:13:46,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:13:46,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:13:46,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:13:46,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:13:46,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:13:46,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:13:46,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:13:46,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:13:46,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:13:46,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:13:46,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:13:46,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:13:46,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:13:46,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:13:46,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:13:46,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:13:46,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:13:46,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:13:46,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:13:46,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:13:46,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:13:46,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:13:46,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:13:46,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:13:46,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:13:46,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:13:46,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:13:46,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:13:46,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:13:46,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:13:46,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:13:46,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:13:46,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:13:46,746 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:13:46,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:13:46,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:13:46,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:13:46,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:13:46,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:13:46,750 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:13:46,750 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:13:46,750 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:13:46,750 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:13:46,751 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:13:46,751 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:13:46,752 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:13:46,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:13:46,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:13:46,752 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:13:46,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:13:46,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:13:46,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:13:46,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:13:46,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:13:46,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:13:46,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:13:46,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:13:46,762 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:13:46,763 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:13:46,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:13:46,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:13:46,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:13:46,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:13:46,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:13:46,765 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:13:46,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 679f2fe8d678884423b2dff47bf2c3c7ede0374b3a8bb68f9a9e8a332d8776ef [2021-12-28 09:13:47,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:13:47,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:13:47,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:13:47,080 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:13:47,080 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:13:47,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_4.c [2021-12-28 09:13:47,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a82452e/06270c1ddea14364a433410167ea34c3/FLAGc4d6e6dc3 [2021-12-28 09:13:47,509 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:13:47,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_4.c [2021-12-28 09:13:47,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a82452e/06270c1ddea14364a433410167ea34c3/FLAGc4d6e6dc3 [2021-12-28 09:13:47,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a82452e/06270c1ddea14364a433410167ea34c3 [2021-12-28 09:13:47,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:13:47,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:13:47,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:13:47,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:13:47,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:13:47,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:13:47" (1/1) ... [2021-12-28 09:13:47,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23245089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:47, skipping insertion in model container [2021-12-28 09:13:47,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:13:47" (1/1) ... [2021-12-28 09:13:47,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:13:47,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:13:48,063 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_4.c[662,675] [2021-12-28 09:13:48,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:13:48,078 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:13:48,088 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_4.c[662,675] [2021-12-28 09:13:48,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:13:48,102 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:13:48,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48 WrapperNode [2021-12-28 09:13:48,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:13:48,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:13:48,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:13:48,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:13:48,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48" (1/1) ... [2021-12-28 09:13:48,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48" (1/1) ... [2021-12-28 09:13:48,163 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2021-12-28 09:13:48,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:13:48,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:13:48,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:13:48,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:13:48,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48" (1/1) ... [2021-12-28 09:13:48,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48" (1/1) ... [2021-12-28 09:13:48,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48" (1/1) ... [2021-12-28 09:13:48,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48" (1/1) ... [2021-12-28 09:13:48,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48" (1/1) ... [2021-12-28 09:13:48,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48" (1/1) ... [2021-12-28 09:13:48,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48" (1/1) ... [2021-12-28 09:13:48,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:13:48,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:13:48,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:13:48,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:13:48,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48" (1/1) ... [2021-12-28 09:13:48,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:48,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:48,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:13:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:13:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:13:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:13:48,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-28 09:13:48,323 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:13:48,324 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:13:48,461 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:13:48,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:13:48,468 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 09:13:48,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:13:48 BoogieIcfgContainer [2021-12-28 09:13:48,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:13:48,471 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:13:48,472 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:13:48,474 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:13:48,475 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:13:48,475 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:13:47" (1/3) ... [2021-12-28 09:13:48,476 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48589a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:13:48, skipping insertion in model container [2021-12-28 09:13:48,476 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:13:48,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:13:48" (2/3) ... [2021-12-28 09:13:48,477 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48589a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:13:48, skipping insertion in model container [2021-12-28 09:13:48,477 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:13:48,477 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:13:48" (3/3) ... [2021-12-28 09:13:48,478 INFO L388 chiAutomizerObserver]: Analyzing ICFG gcd_4.c [2021-12-28 09:13:48,558 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:13:48,558 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:13:48,558 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:13:48,558 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:13:48,558 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:13:48,559 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:13:48,559 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:13:48,559 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:13:48,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:48,591 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:13:48,591 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:13:48,592 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:13:48,596 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-28 09:13:48,597 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:13:48,597 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:13:48,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:48,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:13:48,601 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:13:48,601 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:13:48,601 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-28 09:13:48,602 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:13:48,607 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~x~0#1, main_~y~0#1, main_~g~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~g~0#1;main_~x~0#1 := 63;main_~y~0#1 := 18;assume { :begin_inline_gcd_test } true;gcd_test_#in~a#1, gcd_test_#in~b#1 := main_~x~0#1, main_~y~0#1;havoc gcd_test_#res#1;havoc gcd_test_~a#1, gcd_test_~b#1;gcd_test_~a#1 := gcd_test_#in~a#1;gcd_test_~b#1 := gcd_test_#in~b#1; 19#L22true assume !(gcd_test_~a#1 < 0); 13#L22-2true assume !(gcd_test_~b#1 < 0); 14#L23-1true assume !(0 == gcd_test_~a#1); 5#L30-2true [2021-12-28 09:13:48,607 INFO L793 eck$LassoCheckResult]: Loop: 5#L30-2true assume !!(0 != gcd_test_~b#1); 8#L30true assume !(gcd_test_~a#1 > gcd_test_~b#1);gcd_test_~b#1 := gcd_test_~b#1 - gcd_test_~a#1; 5#L30-2true [2021-12-28 09:13:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash 28695882, now seen corresponding path program 1 times [2021-12-28 09:13:48,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:48,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645825748] [2021-12-28 09:13:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:48,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:48,724 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:13:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:48,759 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:13:48,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:48,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 1 times [2021-12-28 09:13:48,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:48,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204411626] [2021-12-28 09:13:48,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:48,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:48,775 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:13:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:48,789 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:13:48,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:48,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1806939727, now seen corresponding path program 1 times [2021-12-28 09:13:48,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:48,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623751914] [2021-12-28 09:13:48,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:48,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:48,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:13:48,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623751914] [2021-12-28 09:13:48,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623751914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:13:48,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:13:48,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 09:13:48,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990951608] [2021-12-28 09:13:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:13:48,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:13:48,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:13:48,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:13:48,966 INFO L87 Difference]: Start difference. First operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:48,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:13:48,992 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-12-28 09:13:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:13:48,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 24 transitions. [2021-12-28 09:13:48,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:13:49,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 9 states and 10 transitions. [2021-12-28 09:13:49,002 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-28 09:13:49,002 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-28 09:13:49,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2021-12-28 09:13:49,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:13:49,003 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-12-28 09:13:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2021-12-28 09:13:49,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-28 09:13:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-12-28 09:13:49,022 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-12-28 09:13:49,022 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-12-28 09:13:49,023 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:13:49,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2021-12-28 09:13:49,023 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:13:49,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:13:49,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:13:49,024 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:13:49,024 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:13:49,024 INFO L791 eck$LassoCheckResult]: Stem: 59#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call #Ultimate.allocInit(12, 3); 60#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~x~0#1, main_~y~0#1, main_~g~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~g~0#1;main_~x~0#1 := 63;main_~y~0#1 := 18;assume { :begin_inline_gcd_test } true;gcd_test_#in~a#1, gcd_test_#in~b#1 := main_~x~0#1, main_~y~0#1;havoc gcd_test_#res#1;havoc gcd_test_~a#1, gcd_test_~b#1;gcd_test_~a#1 := gcd_test_#in~a#1;gcd_test_~b#1 := gcd_test_#in~b#1; 55#L22 assume !(gcd_test_~a#1 < 0); 56#L22-2 assume !(gcd_test_~b#1 < 0); 62#L23-1 assume !(0 == gcd_test_~a#1); 63#L30-2 assume !!(0 != gcd_test_~b#1); 61#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 57#L30-2 [2021-12-28 09:13:49,025 INFO L793 eck$LassoCheckResult]: Loop: 57#L30-2 assume !!(0 != gcd_test_~b#1); 58#L30 assume !(gcd_test_~a#1 > gcd_test_~b#1);gcd_test_~b#1 := gcd_test_~b#1 - gcd_test_~a#1; 57#L30-2 [2021-12-28 09:13:49,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:49,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1806939725, now seen corresponding path program 1 times [2021-12-28 09:13:49,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:49,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036451307] [2021-12-28 09:13:49,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:49,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:49,035 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:13:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:49,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:13:49,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 2 times [2021-12-28 09:13:49,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:49,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056114285] [2021-12-28 09:13:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:49,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:49,047 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:13:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:49,050 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:13:49,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:49,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1302289042, now seen corresponding path program 1 times [2021-12-28 09:13:49,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:49,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038151822] [2021-12-28 09:13:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:49,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:49,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:13:49,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038151822] [2021-12-28 09:13:49,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038151822] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 09:13:49,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315259511] [2021-12-28 09:13:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:49,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:13:49,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:49,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 09:13:49,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 09:13:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:49,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 09:13:49,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:13:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:49,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 09:13:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:49,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315259511] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 09:13:49,288 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 09:13:49,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-12-28 09:13:49,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055590901] [2021-12-28 09:13:49,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 09:13:49,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:13:49,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 09:13:49,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-28 09:13:49,308 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:13:49,329 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-12-28 09:13:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 09:13:49,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2021-12-28 09:13:49,331 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:13:49,331 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2021-12-28 09:13:49,331 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-12-28 09:13:49,331 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-28 09:13:49,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2021-12-28 09:13:49,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:13:49,332 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-12-28 09:13:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2021-12-28 09:13:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-28 09:13:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-12-28 09:13:49,334 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-12-28 09:13:49,334 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-12-28 09:13:49,334 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:13:49,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2021-12-28 09:13:49,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:13:49,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:13:49,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:13:49,335 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2021-12-28 09:13:49,335 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:13:49,336 INFO L791 eck$LassoCheckResult]: Stem: 143#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call #Ultimate.allocInit(12, 3); 144#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~x~0#1, main_~y~0#1, main_~g~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~g~0#1;main_~x~0#1 := 63;main_~y~0#1 := 18;assume { :begin_inline_gcd_test } true;gcd_test_#in~a#1, gcd_test_#in~b#1 := main_~x~0#1, main_~y~0#1;havoc gcd_test_#res#1;havoc gcd_test_~a#1, gcd_test_~b#1;gcd_test_~a#1 := gcd_test_#in~a#1;gcd_test_~b#1 := gcd_test_#in~b#1; 140#L22 assume !(gcd_test_~a#1 < 0); 141#L22-2 assume !(gcd_test_~b#1 < 0); 145#L23-1 assume !(0 == gcd_test_~a#1); 146#L30-2 assume !!(0 != gcd_test_~b#1); 142#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 138#L30-2 assume !!(0 != gcd_test_~b#1); 139#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 150#L30-2 assume !!(0 != gcd_test_~b#1); 149#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 148#L30-2 [2021-12-28 09:13:49,336 INFO L793 eck$LassoCheckResult]: Loop: 148#L30-2 assume !!(0 != gcd_test_~b#1); 147#L30 assume !(gcd_test_~a#1 > gcd_test_~b#1);gcd_test_~b#1 := gcd_test_~b#1 - gcd_test_~a#1; 148#L30-2 [2021-12-28 09:13:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1664285203, now seen corresponding path program 2 times [2021-12-28 09:13:49,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:49,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883376862] [2021-12-28 09:13:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:49,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:49,352 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:13:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:49,365 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:13:49,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:49,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 3 times [2021-12-28 09:13:49,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:49,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774889224] [2021-12-28 09:13:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:49,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:49,372 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:13:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:49,377 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:13:49,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:49,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1650246872, now seen corresponding path program 2 times [2021-12-28 09:13:49,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:49,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317414935] [2021-12-28 09:13:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:49,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:49,401 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:13:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:49,416 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:13:49,708 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:13:49,708 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:13:49,709 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:13:49,709 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:13:49,710 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:13:49,710 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:49,710 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:13:49,710 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:13:49,710 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd_4.c_Iteration3_Lasso [2021-12-28 09:13:49,710 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:13:49,710 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:13:49,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:13:49,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:13:49,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:13:49,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:13:49,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:13:49,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:13:49,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:13:49,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:13:49,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:13:49,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:13:49,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:13:50,012 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:13:50,016 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:13:50,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,019 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-28 09:13:50,023 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,031 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:13:50,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,033 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:13:50,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:13:50,045 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-28 09:13:50,076 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,082 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,085 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:13:50,085 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:13:50,101 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-28 09:13:50,132 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,140 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,142 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:13:50,142 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:13:50,163 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,204 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:13:50,204 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:13:50,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-28 09:13:50,219 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-28 09:13:50,239 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,248 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:13:50,248 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:13:50,255 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,275 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-28 09:13:50,277 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,284 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,284 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,287 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:13:50,287 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:13:50,310 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-28 09:13:50,363 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,373 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:13:50,373 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:13:50,387 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,407 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-28 09:13:50,447 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,458 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:13:50,458 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:13:50,470 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,486 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-28 09:13:50,491 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,498 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,501 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:13:50,501 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:13:50,516 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,557 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,563 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,572 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:13:50,573 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:13:50,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-28 09:13:50,584 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,613 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-28 09:13:50,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,625 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:13:50,625 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:13:50,650 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,676 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,682 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,689 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,689 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:13:50,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,690 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:13:50,690 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:13:50,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-28 09:13:50,700 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,720 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-28 09:13:50,722 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,728 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:13:50,728 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,728 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:13:50,728 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,729 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:13:50,729 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:13:50,763 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:13:50,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:50,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,789 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-28 09:13:50,794 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:13:50,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:13:50,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:13:50,801 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-28 09:13:50,801 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:13:50,817 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-12-28 09:13:50,817 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-12-28 09:13:50,843 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:13:50,895 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2021-12-28 09:13:50,895 INFO L444 ModelExtractionUtils]: 22 out of 36 variables were initially zero. Simplification set additionally 8 variables to zero. [2021-12-28 09:13:50,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:13:50,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:50,914 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:13:50,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-28 09:13:50,917 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:13:50,948 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 4. [2021-12-28 09:13:50,948 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:13:50,949 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_gcd_test_~b#1) = 1*ULTIMATE.start_gcd_test_~b#1 Supporting invariants [1*ULTIMATE.start_gcd_test_~b#1 >= 0, 1*ULTIMATE.start_gcd_test_~a#1 - 2 >= 0] [2021-12-28 09:13:50,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-28 09:13:50,975 INFO L297 tatePredicateManager]: 2 out of 3 supporting invariants were superfluous and have been removed [2021-12-28 09:13:51,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:51,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 09:13:51,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:13:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:51,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-28 09:13:51,171 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 09:13:51,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:13:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:51,183 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 1 loop predicates [2021-12-28 09:13:51,183 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:51,259 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 15 transitions. Complement of second has 6 states. [2021-12-28 09:13:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-28 09:13:51,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-12-28 09:13:51,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 11 letters. Loop has 2 letters. [2021-12-28 09:13:51,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:13:51,263 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:13:51,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:51,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 09:13:51,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:13:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:51,441 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 09:13:51,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:13:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:51,447 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 1 loop predicates [2021-12-28 09:13:51,448 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:51,495 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 15 transitions. Complement of second has 6 states. [2021-12-28 09:13:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-28 09:13:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:51,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-12-28 09:13:51,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 11 letters. Loop has 2 letters. [2021-12-28 09:13:51,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:13:51,498 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:13:51,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:51,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 09:13:51,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:13:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:51,636 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 09:13:51,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:13:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:51,641 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 1 loop predicates [2021-12-28 09:13:51,641 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:51,745 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 25 transitions. Complement of second has 12 states. [2021-12-28 09:13:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 4 stem states 1 non-accepting loop states 2 accepting loop states [2021-12-28 09:13:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2021-12-28 09:13:51,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 11 letters. Loop has 2 letters. [2021-12-28 09:13:51,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:13:51,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 13 letters. Loop has 2 letters. [2021-12-28 09:13:51,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:13:51,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 11 letters. Loop has 4 letters. [2021-12-28 09:13:51,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:13:51,751 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 25 transitions. [2021-12-28 09:13:51,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-28 09:13:51,752 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 19 states and 23 transitions. [2021-12-28 09:13:51,753 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-12-28 09:13:51,753 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-28 09:13:51,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2021-12-28 09:13:51,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:13:51,753 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-12-28 09:13:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2021-12-28 09:13:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-12-28 09:13:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-12-28 09:13:51,755 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-12-28 09:13:51,755 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-12-28 09:13:51,755 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:13:51,756 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2021-12-28 09:13:51,756 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:13:51,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:13:51,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:13:51,757 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1, 1] [2021-12-28 09:13:51,757 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:13:51,757 INFO L791 eck$LassoCheckResult]: Stem: 406#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call #Ultimate.allocInit(12, 3); 407#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~x~0#1, main_~y~0#1, main_~g~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~g~0#1;main_~x~0#1 := 63;main_~y~0#1 := 18;assume { :begin_inline_gcd_test } true;gcd_test_#in~a#1, gcd_test_#in~b#1 := main_~x~0#1, main_~y~0#1;havoc gcd_test_#res#1;havoc gcd_test_~a#1, gcd_test_~b#1;gcd_test_~a#1 := gcd_test_#in~a#1;gcd_test_~b#1 := gcd_test_#in~b#1; 404#L22 assume !(gcd_test_~a#1 < 0); 405#L22-2 assume !(gcd_test_~b#1 < 0); 408#L23-1 assume !(0 == gcd_test_~a#1); 409#L30-2 assume !!(0 != gcd_test_~b#1); 415#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 414#L30-2 assume !!(0 != gcd_test_~b#1); 413#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 412#L30-2 assume !!(0 != gcd_test_~b#1); 411#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 410#L30-2 assume !!(0 != gcd_test_~b#1); 403#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 399#L30-2 [2021-12-28 09:13:51,757 INFO L793 eck$LassoCheckResult]: Loop: 399#L30-2 assume !!(0 != gcd_test_~b#1); 400#L30 assume !(gcd_test_~a#1 > gcd_test_~b#1);gcd_test_~b#1 := gcd_test_~b#1 - gcd_test_~a#1; 399#L30-2 [2021-12-28 09:13:51,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1650246870, now seen corresponding path program 3 times [2021-12-28 09:13:51,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:51,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694325483] [2021-12-28 09:13:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:51,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:51,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:13:51,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694325483] [2021-12-28 09:13:51,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694325483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:13:51,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:13:51,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 09:13:51,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477572967] [2021-12-28 09:13:51,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:13:51,815 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:13:51,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 4 times [2021-12-28 09:13:51,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:51,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053899781] [2021-12-28 09:13:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:51,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:51,819 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:13:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:51,821 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:13:51,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:13:51,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 09:13:51,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 09:13:51,839 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:51,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:13:51,859 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-12-28 09:13:51,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 09:13:51,860 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2021-12-28 09:13:51,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:13:51,864 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 18 states and 20 transitions. [2021-12-28 09:13:51,864 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-28 09:13:51,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-28 09:13:51,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 20 transitions. [2021-12-28 09:13:51,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:13:51,865 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-12-28 09:13:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 20 transitions. [2021-12-28 09:13:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-12-28 09:13:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-12-28 09:13:51,868 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-12-28 09:13:51,868 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-12-28 09:13:51,868 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-28 09:13:51,869 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2021-12-28 09:13:51,869 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:13:51,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:13:51,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:13:51,871 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 1, 1, 1, 1, 1, 1] [2021-12-28 09:13:51,871 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:13:51,871 INFO L791 eck$LassoCheckResult]: Stem: 451#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call #Ultimate.allocInit(12, 3); 452#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~x~0#1, main_~y~0#1, main_~g~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~g~0#1;main_~x~0#1 := 63;main_~y~0#1 := 18;assume { :begin_inline_gcd_test } true;gcd_test_#in~a#1, gcd_test_#in~b#1 := main_~x~0#1, main_~y~0#1;havoc gcd_test_#res#1;havoc gcd_test_~a#1, gcd_test_~b#1;gcd_test_~a#1 := gcd_test_#in~a#1;gcd_test_~b#1 := gcd_test_#in~b#1; 444#L22 assume !(gcd_test_~a#1 < 0); 445#L22-2 assume !(gcd_test_~b#1 < 0); 453#L23-1 assume !(0 == gcd_test_~a#1); 454#L30-2 assume !!(0 != gcd_test_~b#1); 460#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 459#L30-2 assume !!(0 != gcd_test_~b#1); 458#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 457#L30-2 assume !!(0 != gcd_test_~b#1); 456#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 455#L30-2 assume !!(0 != gcd_test_~b#1); 449#L30 assume !(gcd_test_~a#1 > gcd_test_~b#1);gcd_test_~b#1 := gcd_test_~b#1 - gcd_test_~a#1; 448#L30-2 assume !!(0 != gcd_test_~b#1); 450#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 446#L30-2 [2021-12-28 09:13:51,871 INFO L793 eck$LassoCheckResult]: Loop: 446#L30-2 assume !!(0 != gcd_test_~b#1); 447#L30 assume !(gcd_test_~a#1 > gcd_test_~b#1);gcd_test_~b#1 := gcd_test_~b#1 - gcd_test_~a#1; 446#L30-2 [2021-12-28 09:13:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1044312667, now seen corresponding path program 3 times [2021-12-28 09:13:51,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:51,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864007296] [2021-12-28 09:13:51,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:51,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:51,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:13:51,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864007296] [2021-12-28 09:13:51,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864007296] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 09:13:51,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113295644] [2021-12-28 09:13:51,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 09:13:51,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:13:51,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:51,956 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 09:13:51,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-28 09:13:51,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-28 09:13:51,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 09:13:51,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 09:13:51,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:13:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:52,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 09:13:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:52,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113295644] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 09:13:52,219 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 09:13:52,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2021-12-28 09:13:52,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993526966] [2021-12-28 09:13:52,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 09:13:52,220 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:13:52,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 5 times [2021-12-28 09:13:52,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:52,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26061442] [2021-12-28 09:13:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:52,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:52,223 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:13:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:52,225 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:13:52,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:13:52,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 09:13:52,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-28 09:13:52,241 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:52,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:13:52,304 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-12-28 09:13:52,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 09:13:52,305 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 23 transitions. [2021-12-28 09:13:52,306 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:13:52,306 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 22 transitions. [2021-12-28 09:13:52,306 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-28 09:13:52,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-28 09:13:52,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 22 transitions. [2021-12-28 09:13:52,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:13:52,306 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-12-28 09:13:52,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 22 transitions. [2021-12-28 09:13:52,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-12-28 09:13:52,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.105263157894737) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-28 09:13:52,308 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-28 09:13:52,308 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-28 09:13:52,308 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-28 09:13:52,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 21 transitions. [2021-12-28 09:13:52,309 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:13:52,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:13:52,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:13:52,309 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 2, 1, 1, 1, 1, 1] [2021-12-28 09:13:52,309 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:13:52,309 INFO L791 eck$LassoCheckResult]: Stem: 595#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call #Ultimate.allocInit(12, 3); 596#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~x~0#1, main_~y~0#1, main_~g~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~g~0#1;main_~x~0#1 := 63;main_~y~0#1 := 18;assume { :begin_inline_gcd_test } true;gcd_test_#in~a#1, gcd_test_#in~b#1 := main_~x~0#1, main_~y~0#1;havoc gcd_test_#res#1;havoc gcd_test_~a#1, gcd_test_~b#1;gcd_test_~a#1 := gcd_test_#in~a#1;gcd_test_~b#1 := gcd_test_#in~b#1; 591#L22 assume !(gcd_test_~a#1 < 0); 592#L22-2 assume !(gcd_test_~b#1 < 0); 597#L23-1 assume !(0 == gcd_test_~a#1); 598#L30-2 assume !!(0 != gcd_test_~b#1); 605#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 604#L30-2 assume !!(0 != gcd_test_~b#1); 603#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 602#L30-2 assume !!(0 != gcd_test_~b#1); 601#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 599#L30-2 assume !!(0 != gcd_test_~b#1); 600#L30 assume !(gcd_test_~a#1 > gcd_test_~b#1);gcd_test_~b#1 := gcd_test_~b#1 - gcd_test_~a#1; 589#L30-2 assume !!(0 != gcd_test_~b#1); 590#L30 assume !(gcd_test_~a#1 > gcd_test_~b#1);gcd_test_~b#1 := gcd_test_~b#1 - gcd_test_~a#1; 594#L30-2 assume !!(0 != gcd_test_~b#1); 593#L30 assume gcd_test_~a#1 > gcd_test_~b#1;gcd_test_~a#1 := gcd_test_~a#1 - gcd_test_~b#1; 587#L30-2 [2021-12-28 09:13:52,309 INFO L793 eck$LassoCheckResult]: Loop: 587#L30-2 assume !!(0 != gcd_test_~b#1); 588#L30 assume !(gcd_test_~a#1 > gcd_test_~b#1);gcd_test_~b#1 := gcd_test_~b#1 - gcd_test_~a#1; 587#L30-2 [2021-12-28 09:13:52,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:52,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1437871456, now seen corresponding path program 4 times [2021-12-28 09:13:52,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:52,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530317733] [2021-12-28 09:13:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:52,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:13:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:52,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:13:52,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530317733] [2021-12-28 09:13:52,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530317733] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 09:13:52,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345237917] [2021-12-28 09:13:52,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 09:13:52,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:13:52,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:13:52,412 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 09:13:52,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-28 09:13:52,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 09:13:52,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 09:13:52,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-28 09:13:52,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:13:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:52,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 09:13:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:13:52,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345237917] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 09:13:52,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 09:13:52,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2021-12-28 09:13:52,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706920503] [2021-12-28 09:13:52,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 09:13:52,737 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:13:52,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:13:52,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 6 times [2021-12-28 09:13:52,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:13:52,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847626795] [2021-12-28 09:13:52,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:13:52,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:13:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:52,748 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:13:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:13:52,751 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:13:52,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:13:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 09:13:52,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-28 09:13:52,767 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. cyclomatic complexity: 4 Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:13:52,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:13:52,869 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-12-28 09:13:52,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 09:13:52,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 15 transitions. [2021-12-28 09:13:52,872 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-28 09:13:52,872 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2021-12-28 09:13:52,872 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-28 09:13:52,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-28 09:13:52,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-28 09:13:52,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:13:52,872 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:13:52,873 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:13:52,873 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:13:52,873 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-28 09:13:52,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-28 09:13:52,873 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-28 09:13:52,873 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-28 09:13:52,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:13:52 BoogieIcfgContainer [2021-12-28 09:13:52,879 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:13:52,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:13:52,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:13:52,880 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:13:52,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:13:48" (3/4) ... [2021-12-28 09:13:52,884 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 09:13:52,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:13:52,885 INFO L158 Benchmark]: Toolchain (without parser) took 4948.37ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 39.7MB in the beginning and 27.2MB in the end (delta: 12.5MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2021-12-28 09:13:52,885 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:13:52,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.95ms. Allocated memory is still 60.8MB. Free memory was 39.6MB in the beginning and 30.0MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 09:13:52,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.84ms. Allocated memory is still 60.8MB. Free memory was 30.0MB in the beginning and 45.0MB in the end (delta: -14.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-28 09:13:52,888 INFO L158 Benchmark]: Boogie Preprocessor took 36.84ms. Allocated memory is still 60.8MB. Free memory was 45.0MB in the beginning and 43.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:13:52,889 INFO L158 Benchmark]: RCFGBuilder took 268.74ms. Allocated memory is still 60.8MB. Free memory was 43.9MB in the beginning and 34.8MB in the end (delta: 9.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-28 09:13:52,889 INFO L158 Benchmark]: BuchiAutomizer took 4407.78ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 34.6MB in the beginning and 27.2MB in the end (delta: 7.4MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2021-12-28 09:13:52,889 INFO L158 Benchmark]: Witness Printer took 4.97ms. Allocated memory is still 94.4MB. Free memory is still 27.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:13:52,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 159.95ms. Allocated memory is still 60.8MB. Free memory was 39.6MB in the beginning and 30.0MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.84ms. Allocated memory is still 60.8MB. Free memory was 30.0MB in the beginning and 45.0MB in the end (delta: -14.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.84ms. Allocated memory is still 60.8MB. Free memory was 45.0MB in the beginning and 43.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 268.74ms. Allocated memory is still 60.8MB. Free memory was 43.9MB in the beginning and 34.8MB in the end (delta: 9.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 4407.78ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 34.6MB in the beginning and 27.2MB in the end (delta: 7.4MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * Witness Printer took 4.97ms. Allocated memory is still 94.4MB. Free memory is still 27.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (5 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has affine ranking function b and consists of 7 locations. 5 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 7 iterations. TraceHistogramMax:6. Analysis of lassos took 3.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 5. Nontrivial modules had stage [0, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 267 IncrementalHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 33 mSDtfsCounter, 267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN3 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital97 mio100 ax100 hnf100 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq202 hnf91 smp100 dnf127 smp100 tf100 neg95 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 160ms VariablesStem: 6 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-28 09:13:52,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:53,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-28 09:13:53,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 09:13:53,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE