./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec 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/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash fce4ad715fa5546a587c43eb09d1a8cb5dcde607 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 13:57:35,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 13:57:35,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 13:57:35,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 13:57:35,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 13:57:35,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 13:57:35,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 13:57:35,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 13:57:35,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 13:57:35,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 13:57:35,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 13:57:35,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 13:57:35,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 13:57:35,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 13:57:35,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 13:57:35,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 13:57:35,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 13:57:35,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 13:57:35,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 13:57:35,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 13:57:35,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 13:57:35,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 13:57:35,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 13:57:35,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 13:57:35,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 13:57:35,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 13:57:35,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 13:57:35,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 13:57:35,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 13:57:35,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 13:57:35,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 13:57:35,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 13:57:35,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 13:57:35,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 13:57:35,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 13:57:35,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 13:57:35,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 13:57:35,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 13:57:35,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 13:57:35,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 13:57:35,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 13:57:35,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 13:57:35,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 13:57:35,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 13:57:35,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 13:57:35,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 13:57:35,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 13:57:35,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 13:57:35,186 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 13:57:35,186 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 13:57:35,186 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 13:57:35,186 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 13:57:35,187 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 13:57:35,187 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 13:57:35,187 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 13:57:35,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 13:57:35,188 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 13:57:35,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 13:57:35,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 13:57:35,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 13:57:35,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 13:57:35,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 13:57:35,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 13:57:35,189 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 13:57:35,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 13:57:35,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 13:57:35,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 13:57:35,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 13:57:35,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 13:57:35,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 13:57:35,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 13:57:35,191 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 13:57:35,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fce4ad715fa5546a587c43eb09d1a8cb5dcde607 [2021-08-27 13:57:35,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 13:57:35,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 13:57:35,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 13:57:35,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 13:57:35,478 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 13:57:35,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2021-08-27 13:57:35,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d4e9049/5291d84f02de441d90f9a9a0f3554da9/FLAG8cfdde70f [2021-08-27 13:57:35,974 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 13:57:35,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2021-08-27 13:57:35,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d4e9049/5291d84f02de441d90f9a9a0f3554da9/FLAG8cfdde70f [2021-08-27 13:57:35,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d4e9049/5291d84f02de441d90f9a9a0f3554da9 [2021-08-27 13:57:35,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 13:57:35,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 13:57:35,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 13:57:35,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 13:57:36,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 13:57:36,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:57:35" (1/1) ... [2021-08-27 13:57:36,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4272dfa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36, skipping insertion in model container [2021-08-27 13:57:36,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:57:35" (1/1) ... [2021-08-27 13:57:36,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 13:57:36,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 13:57:36,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:57:36,109 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 13:57:36,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:57:36,129 INFO L208 MainTranslator]: Completed translation [2021-08-27 13:57:36,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36 WrapperNode [2021-08-27 13:57:36,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 13:57:36,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 13:57:36,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 13:57:36,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 13:57:36,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36" (1/1) ... [2021-08-27 13:57:36,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36" (1/1) ... [2021-08-27 13:57:36,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 13:57:36,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 13:57:36,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 13:57:36,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 13:57:36,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36" (1/1) ... [2021-08-27 13:57:36,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36" (1/1) ... [2021-08-27 13:57:36,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36" (1/1) ... [2021-08-27 13:57:36,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36" (1/1) ... [2021-08-27 13:57:36,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36" (1/1) ... [2021-08-27 13:57:36,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36" (1/1) ... [2021-08-27 13:57:36,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36" (1/1) ... [2021-08-27 13:57:36,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 13:57:36,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 13:57:36,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 13:57:36,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 13:57:36,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36" (1/1) ... [2021-08-27 13:57:36,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:36,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:36,194 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) [2021-08-27 13:57:36,222 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 [2021-08-27 13:57:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 13:57:36,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 13:57:36,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 13:57:36,397 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 13:57:36,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:57:36 BoogieIcfgContainer [2021-08-27 13:57:36,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 13:57:36,400 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 13:57:36,400 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 13:57:36,402 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 13:57:36,403 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:57:36,403 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 01:57:35" (1/3) ... [2021-08-27 13:57:36,404 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36cd9449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:57:36, skipping insertion in model container [2021-08-27 13:57:36,404 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:57:36,404 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:57:36" (2/3) ... [2021-08-27 13:57:36,405 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36cd9449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:57:36, skipping insertion in model container [2021-08-27 13:57:36,405 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:57:36,405 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:57:36" (3/3) ... [2021-08-27 13:57:36,406 INFO L389 chiAutomizerObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex9.c [2021-08-27 13:57:36,454 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 13:57:36,454 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 13:57:36,454 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 13:57:36,454 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 13:57:36,454 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 13:57:36,455 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 13:57:36,455 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 13:57:36,455 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 13:57:36,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-08-27 13:57:36,479 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 13:57:36,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:57:36,485 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:57:36,491 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 13:57:36,492 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 13:57:36,492 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 13:57:36,492 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-08-27 13:57:36,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 13:57:36,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:57:36,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:57:36,494 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 13:57:36,494 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 13:57:36,500 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L21-2true [2021-08-27 13:57:36,501 INFO L793 eck$LassoCheckResult]: Loop: 8#L21-2true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 5#L18true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1; 8#L21-2true [2021-08-27 13:57:36,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:57:36,507 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-27 13:57:36,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:57:36,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776570222] [2021-08-27 13:57:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:57:36,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:57:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:36,584 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:57:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:36,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:57:36,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:57:36,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-08-27 13:57:36,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:57:36,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083133893] [2021-08-27 13:57:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:57:36,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:57:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:36,627 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:57:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:36,642 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:57:36,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:57:36,645 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-08-27 13:57:36,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:57:36,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771273266] [2021-08-27 13:57:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:57:36,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:57:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:36,660 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:57:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:36,671 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:57:36,847 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:57:36,848 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:57:36,848 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:57:36,848 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:57:36,849 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:57:36,849 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:36,849 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:57:36,849 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:57:36,849 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2021-08-27 13:57:36,856 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:57:36,856 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:57:36,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:36,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:36,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:36,983 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:57:36,984 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:57:36,986 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:36,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:36,989 INFO L229 MonitoredProcess]: Starting monitored process 2 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) [2021-08-27 13:57:36,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:57:36,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:57:37,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 13:57:37,019 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:57:37,019 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:57:37,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 13:57:37,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:37,043 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) [2021-08-27 13:57:37,044 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 [2021-08-27 13:57:37,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:57:37,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:57:37,058 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:57:37,058 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:57:37,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-08-27 13:57:37,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:37,078 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) [2021-08-27 13:57:37,095 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 [2021-08-27 13:57:37,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:57:37,099 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:57:37,155 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 [2021-08-27 13:57:37,155 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:37,156 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) [2021-08-27 13:57:37,164 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 [2021-08-27 13:57:37,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:57:37,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:57:37,221 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:57:37,225 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 [2021-08-27 13:57:37,225 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:57:37,225 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:57:37,225 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:57:37,225 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:57:37,225 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:57:37,225 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,226 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:57:37,226 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:57:37,226 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2021-08-27 13:57:37,226 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:57:37,226 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:57:37,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:37,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:37,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:37,301 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:57:37,305 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:57:37,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:37,307 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) [2021-08-27 13:57:37,308 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 [2021-08-27 13:57:37,309 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 [2021-08-27 13:57:37,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:57:37,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:57:37,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:57:37,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:57:37,319 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:57:37,320 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:57:37,332 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:57:37,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-08-27 13:57:37,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:37,352 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) [2021-08-27 13:57:37,354 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 [2021-08-27 13:57:37,354 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 [2021-08-27 13:57:37,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:57:37,361 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:57:37,361 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:57:37,361 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:57:37,364 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:57:37,364 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:57:37,378 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:57:37,395 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 [2021-08-27 13:57:37,395 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:37,396 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) [2021-08-27 13:57:37,399 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 [2021-08-27 13:57:37,401 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 [2021-08-27 13:57:37,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:57:37,407 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:57:37,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:57:37,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:57:37,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:57:37,409 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:57:37,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:57:37,419 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:57:37,422 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 13:57:37,422 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 13:57:37,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:37,424 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) [2021-08-27 13:57:37,425 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 [2021-08-27 13:57:37,426 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:57:37,426 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:57:37,426 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:57:37,426 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2021-08-27 13:57:37,441 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 [2021-08-27 13:57:37,443 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:57:37,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:57:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:57:37,495 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 [2021-08-27 13:57:37,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:57:37,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:57:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:57:37,509 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:57:37,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:57:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:57:37,537 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 13:57:37,537 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-08-27 13:57:37,573 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 30 states and 39 transitions. Complement of second has 7 states. [2021-08-27 13:57:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 13:57:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-08-27 13:57:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-08-27 13:57:37,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 2 letters. [2021-08-27 13:57:37,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:57:37,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 3 letters. Loop has 2 letters. [2021-08-27 13:57:37,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:57:37,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 4 letters. [2021-08-27 13:57:37,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:57:37,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 39 transitions. [2021-08-27 13:57:37,581 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 13:57:37,584 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 15 transitions. [2021-08-27 13:57:37,585 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-08-27 13:57:37,585 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-08-27 13:57:37,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2021-08-27 13:57:37,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:57:37,586 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-08-27 13:57:37,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2021-08-27 13:57:37,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-08-27 13:57:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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) [2021-08-27 13:57:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2021-08-27 13:57:37,605 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-08-27 13:57:37,605 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-08-27 13:57:37,605 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 13:57:37,605 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2021-08-27 13:57:37,606 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 13:57:37,606 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:57:37,606 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:57:37,606 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 13:57:37,606 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 13:57:37,607 INFO L791 eck$LassoCheckResult]: Stem: 79#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 80#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 74#L18 [2021-08-27 13:57:37,607 INFO L793 eck$LassoCheckResult]: Loop: 74#L18 assume !(main_~q~0 < main_~p~0); 75#L21 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1; 81#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 74#L18 [2021-08-27 13:57:37,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:57:37,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-27 13:57:37,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:57:37,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930481437] [2021-08-27 13:57:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:57:37,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:57:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:37,612 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:57:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:37,614 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:57:37,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:57:37,615 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2021-08-27 13:57:37,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:57:37,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783396018] [2021-08-27 13:57:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:57:37,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:57:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:37,620 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:57:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:37,623 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:57:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:57:37,624 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2021-08-27 13:57:37,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:57:37,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413374205] [2021-08-27 13:57:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:57:37,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:57:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:37,629 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:57:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:37,633 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:57:37,659 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:57:37,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:57:37,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:57:37,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:57:37,659 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:57:37,659 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:57:37,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:57:37,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2021-08-27 13:57:37,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:57:37,660 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:57:37,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:37,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:37,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:37,710 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:57:37,710 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:57:37,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:37,711 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) [2021-08-27 13:57:37,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:57:37,717 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:57:37,729 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 [2021-08-27 13:57:37,745 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:57:37,745 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:57:37,771 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 [2021-08-27 13:57:37,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:37,773 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) [2021-08-27 13:57:37,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:57:37,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:57:37,786 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 [2021-08-27 13:57:37,809 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:57:37,809 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:57:37,831 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 [2021-08-27 13:57:37,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:37,833 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) [2021-08-27 13:57:37,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:57:37,844 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:57:37,854 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 [2021-08-27 13:57:37,895 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 [2021-08-27 13:57:37,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:37,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:37,896 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) [2021-08-27 13:57:37,897 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 [2021-08-27 13:57:37,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:57:37,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:57:38,001 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:57:38,007 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 [2021-08-27 13:57:38,007 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:57:38,007 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:57:38,007 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:57:38,007 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:57:38,007 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:57:38,007 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:38,007 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:57:38,007 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:57:38,007 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2021-08-27 13:57:38,008 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:57:38,008 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:57:38,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:38,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:38,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:57:38,064 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:57:38,064 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:57:38,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:38,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:38,066 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) [2021-08-27 13:57:38,067 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 [2021-08-27 13:57:38,069 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 [2021-08-27 13:57:38,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:57:38,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:57:38,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:57:38,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:57:38,081 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:57:38,081 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:57:38,100 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:57:38,127 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 [2021-08-27 13:57:38,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:38,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:38,128 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) [2021-08-27 13:57:38,130 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 [2021-08-27 13:57:38,131 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 [2021-08-27 13:57:38,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:57:38,138 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:57:38,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:57:38,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:57:38,145 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:57:38,145 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:57:38,168 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:57:38,195 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 [2021-08-27 13:57:38,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:38,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:38,196 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) [2021-08-27 13:57:38,198 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 [2021-08-27 13:57:38,199 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 [2021-08-27 13:57:38,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:57:38,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:57:38,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:57:38,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:57:38,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:57:38,208 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:57:38,208 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:57:38,224 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:57:38,227 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 13:57:38,228 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 13:57:38,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:57:38,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:57:38,229 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) [2021-08-27 13:57:38,239 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:57:38,239 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:57:38,239 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:57:38,239 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2021-08-27 13:57:38,250 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 [2021-08-27 13:57:38,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-27 13:57:38,258 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:57:38,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:57:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:57:38,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:57:38,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:57:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:57:38,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:57:38,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:57:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:57:38,323 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 13:57:38,323 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-08-27 13:57:38,352 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 25 states and 38 transitions. Complement of second has 6 states. [2021-08-27 13:57:38,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 13:57:38,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-08-27 13:57:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-08-27 13:57:38,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 3 letters. [2021-08-27 13:57:38,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:57:38,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2021-08-27 13:57:38,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:57:38,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2021-08-27 13:57:38,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:57:38,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 38 transitions. [2021-08-27 13:57:38,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 13:57:38,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 23 states and 35 transitions. [2021-08-27 13:57:38,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-08-27 13:57:38,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-08-27 13:57:38,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 35 transitions. [2021-08-27 13:57:38,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:57:38,366 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2021-08-27 13:57:38,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 35 transitions. [2021-08-27 13:57:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-08-27 13:57:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 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) [2021-08-27 13:57:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2021-08-27 13:57:38,371 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2021-08-27 13:57:38,371 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2021-08-27 13:57:38,372 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 13:57:38,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 34 transitions. [2021-08-27 13:57:38,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 13:57:38,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:57:38,374 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:57:38,374 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 13:57:38,374 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 13:57:38,374 INFO L791 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 164#L18 assume !(main_~q~0 < main_~p~0); 153#L21 [2021-08-27 13:57:38,374 INFO L793 eck$LassoCheckResult]: Loop: 153#L21 assume !(main_~p~0 < main_~q~0); 154#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 156#L18 assume !(main_~q~0 < main_~p~0); 153#L21 [2021-08-27 13:57:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:57:38,375 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-08-27 13:57:38,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:57:38,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123220510] [2021-08-27 13:57:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:57:38,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:57:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:38,390 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:57:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:57:38,394 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:57:38,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:57:38,396 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2021-08-27 13:57:38,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:57:38,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965963971] [2021-08-27 13:57:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:57:38,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:57:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:57:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:57:38,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 13:57:38,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965963971] [2021-08-27 13:57:38,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965963971] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 13:57:38,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 13:57:38,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 13:57:38,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014398636] [2021-08-27 13:57:38,437 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 13:57:38,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 13:57:38,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 13:57:38,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 13:57:38,440 INFO L87 Difference]: Start difference. First operand 22 states and 34 transitions. cyclomatic complexity: 16 Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-08-27 13:57:38,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 13:57:38,454 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2021-08-27 13:57:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 13:57:38,455 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2021-08-27 13:57:38,455 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 13:57:38,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2021-08-27 13:57:38,456 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 13:57:38,456 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 13:57:38,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 13:57:38,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 13:57:38,461 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:57:38,461 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:57:38,461 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:57:38,461 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 13:57:38,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 13:57:38,461 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 13:57:38,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 13:57:38,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 01:57:38 BoogieIcfgContainer [2021-08-27 13:57:38,466 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 13:57:38,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 13:57:38,467 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 13:57:38,467 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 13:57:38,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:57:36" (3/4) ... [2021-08-27 13:57:38,469 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 13:57:38,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 13:57:38,470 INFO L168 Benchmark]: Toolchain (without parser) took 2474.33 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 36.0 MB in the beginning and 64.7 MB in the end (delta: -28.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:57:38,471 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:57:38,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 133.36 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 27.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 13:57:38,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.72 ms. Allocated memory is still 56.6 MB. Free memory was 27.2 MB in the beginning and 25.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:57:38,472 INFO L168 Benchmark]: Boogie Preprocessor took 13.12 ms. Allocated memory is still 56.6 MB. Free memory was 25.9 MB in the beginning and 25.1 MB in the end (delta: 848.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 13:57:38,472 INFO L168 Benchmark]: RCFGBuilder took 232.49 ms. Allocated memory is still 56.6 MB. Free memory was 24.9 MB in the beginning and 33.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-08-27 13:57:38,473 INFO L168 Benchmark]: BuchiAutomizer took 2066.32 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 33.9 MB in the beginning and 65.3 MB in the end (delta: -31.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-08-27 13:57:38,473 INFO L168 Benchmark]: Witness Printer took 2.76 ms. Allocated memory is still 83.9 MB. Free memory was 64.8 MB in the beginning and 64.7 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:57:38,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2021-08-27 13:57:38,485 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 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 133.36 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 27.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.72 ms. Allocated memory is still 56.6 MB. Free memory was 27.2 MB in the beginning and 25.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.12 ms. Allocated memory is still 56.6 MB. Free memory was 25.9 MB in the beginning and 25.1 MB in the end (delta: 848.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 232.49 ms. Allocated memory is still 56.6 MB. Free memory was 24.9 MB in the beginning and 33.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2066.32 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 33.9 MB in the beginning and 65.3 MB in the end (delta: -31.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Witness Printer took 2.76 ms. Allocated memory is still 83.9 MB. Free memory was 64.8 MB in the beginning and 64.7 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 13.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 18 SDslu, 9 SDs, 0 SdLazy, 38 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.0ms Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 13:57:38,515 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...