./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex03.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/Ex03.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 4c415167dfa4b02636468ff00722dddee0c99139 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:35:15,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:35:15,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:35:15,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:35:15,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:35:15,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:35:15,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:35:15,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:35:15,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:35:15,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:35:15,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:35:15,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:35:15,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:35:15,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:35:15,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:35:15,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:35:15,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:35:15,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:35:15,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:35:15,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:35:15,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:35:15,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:35:15,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:35:15,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:35:15,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:35:15,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:35:15,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:35:15,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:35:15,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:35:15,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:35:15,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:35:15,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:35:15,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:35:15,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:35:15,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:35:15,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:35:15,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:35:15,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:35:15,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:35:15,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:35:15,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:35:15,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:35:15,396 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:35:15,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:35:15,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:35:15,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:35:15,398 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:35:15,399 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:35:15,399 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:35:15,399 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:35:15,399 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:35:15,399 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:35:15,400 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:35:15,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:35:15,401 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:35:15,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:35:15,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:35:15,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:35:15,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:35:15,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:35:15,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:35:15,402 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:35:15,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:35:15,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:35:15,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:35:15,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:35:15,403 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:35:15,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:35:15,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:35:15,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:35:15,404 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:35:15,405 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:35:15,406 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c415167dfa4b02636468ff00722dddee0c99139 [2020-10-20 06:35:15,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:35:15,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:35:15,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:35:15,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:35:15,633 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:35:15,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex03.c [2020-10-20 06:35:15,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c6a330eb/af6afb347e6c40938cb4688ead30f153/FLAG8d5742bfe [2020-10-20 06:35:16,153 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:35:16,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex03.c [2020-10-20 06:35:16,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c6a330eb/af6afb347e6c40938cb4688ead30f153/FLAG8d5742bfe [2020-10-20 06:35:16,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c6a330eb/af6afb347e6c40938cb4688ead30f153 [2020-10-20 06:35:16,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:35:16,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:35:16,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:16,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:35:16,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:35:16,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c98a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16, skipping insertion in model container [2020-10-20 06:35:16,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:35:16,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:35:16,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:16,851 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:35:16,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:16,873 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:35:16,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16 WrapperNode [2020-10-20 06:35:16,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:16,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:16,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:35:16,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:35:16,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:16,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:35:16,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:35:16,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:35:16,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:35:16,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:35:16,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:35:16,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:35:16,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:16,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:35:16,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:35:17,131 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:35:17,131 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:35:17,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:17 BoogieIcfgContainer [2020-10-20 06:35:17,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:35:17,134 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:35:17,134 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:35:17,143 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:35:17,144 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:17,145 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:35:16" (1/3) ... [2020-10-20 06:35:17,146 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@243b8567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:17, skipping insertion in model container [2020-10-20 06:35:17,146 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:17,146 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (2/3) ... [2020-10-20 06:35:17,146 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@243b8567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:17, skipping insertion in model container [2020-10-20 06:35:17,146 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:17,147 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:17" (3/3) ... [2020-10-20 06:35:17,148 INFO L373 chiAutomizerObserver]: Analyzing ICFG Ex03.c [2020-10-20 06:35:17,196 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:35:17,196 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:35:17,196 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:35:17,196 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:35:17,196 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:35:17,196 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:35:17,196 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:35:17,197 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:35:17,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:35:17,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:17,228 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:17,228 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:17,234 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:17,234 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:17,234 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:35:17,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:35:17,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:17,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:17,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:17,235 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:17,236 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:17,242 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L10-2true [2020-10-20 06:35:17,242 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 < 0); 4#L10true assume -5 != main_~i~0;main_~i~0 := 1 + main_~i~0; 8#L10-2true [2020-10-20 06:35:17,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:17,248 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:35:17,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:17,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461489854] [2020-10-20 06:35:17,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,329 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,332 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,346 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:17,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:17,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-10-20 06:35:17,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:17,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745361843] [2020-10-20 06:35:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,359 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,364 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:17,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:17,366 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-10-20 06:35:17,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:17,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332852555] [2020-10-20 06:35:17,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,378 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:17,498 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:17,499 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:17,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:17,500 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:17,500 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:17,500 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:17,501 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:17,501 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:17,501 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex03.c_Iteration1_Loop [2020-10-20 06:35:17,502 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:17,502 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:17,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,793 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:17,794 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:17,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:17,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:17,816 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:17,817 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:17,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:17,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:17,846 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:17,847 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:17,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:17,882 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:17,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:17,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:17,949 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:17,955 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:17,955 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:17,955 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:17,955 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:17,956 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:17,956 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:17,956 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:17,956 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:17,957 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex03.c_Iteration1_Loop [2020-10-20 06:35:17,957 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:17,957 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:17,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:18,115 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:18,123 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:18,141 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:18,146 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:18,146 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:18,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:18,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,161 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:18,161 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:18,168 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:18,209 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:18,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:18,213 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:18,213 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:18,213 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,222 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:18,222 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:18,232 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:18,279 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,281 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:18,281 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:18,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:18,282 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:35:18,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:18,289 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 06:35:18,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:18,294 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:18,300 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:18,300 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:18,309 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:18,309 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:18,309 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:18,310 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,340 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:18,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:18,378 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:18,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:18,389 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:18,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:18,419 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 [2020-10-20 06:35:18,420 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-10-20 06:35:18,477 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2020-10-20 06:35:18,487 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 [2020-10-20 06:35:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-10-20 06:35:18,492 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-20 06:35:18,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:18,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-20 06:35:18,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:18,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-20 06:35:18,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:18,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2020-10-20 06:35:18,509 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:18,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2020-10-20 06:35:18,521 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-20 06:35:18,523 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-20 06:35:18,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-10-20 06:35:18,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:18,524 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-20 06:35:18,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-10-20 06:35:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-10-20 06:35:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:35:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-10-20 06:35:18,558 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:35:18,558 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:35:18,559 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:35:18,559 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-10-20 06:35:18,559 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:18,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:18,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:18,560 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:35:18,560 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:18,560 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 69#L10-2 assume !!(main_~i~0 < 0); 63#L10 [2020-10-20 06:35:18,560 INFO L796 eck$LassoCheckResult]: Loop: 63#L10 assume !(-5 != main_~i~0); 64#L10-2 assume !!(main_~i~0 < 0); 63#L10 [2020-10-20 06:35:18,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:18,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-20 06:35:18,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:18,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707054126] [2020-10-20 06:35:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:18,565 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:18,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:18,568 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:18,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:18,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2020-10-20 06:35:18,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:18,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516377415] [2020-10-20 06:35:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:18,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:18,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:18,577 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:18,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:18,578 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2020-10-20 06:35:18,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:18,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833342529] [2020-10-20 06:35:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:18,582 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:18,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:18,585 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:18,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:35:18 BoogieIcfgContainer [2020-10-20 06:35:18,629 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:35:18,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:35:18,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:35:18,630 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:35:18,631 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:17" (3/4) ... [2020-10-20 06:35:18,633 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 06:35:18,672 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:35:18,672 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:35:18,674 INFO L168 Benchmark]: Toolchain (without parser) took 2119.66 ms. Allocated memory was 35.7 MB in the beginning and 49.8 MB in the end (delta: 14.2 MB). Free memory was 16.2 MB in the beginning and 19.6 MB in the end (delta: -3.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:18,675 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 10.0 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-20 06:35:18,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.37 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 15.4 MB in the beginning and 26.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:18,677 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.58 ms. Allocated memory is still 44.0 MB. Free memory was 26.8 MB in the beginning and 25.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:18,678 INFO L168 Benchmark]: Boogie Preprocessor took 17.30 ms. Allocated memory is still 44.0 MB. Free memory was 25.4 MB in the beginning and 24.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:18,678 INFO L168 Benchmark]: RCFGBuilder took 209.10 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 15.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:18,679 INFO L168 Benchmark]: BuchiAutomizer took 1495.69 ms. Allocated memory was 44.0 MB in the beginning and 49.8 MB in the end (delta: 5.8 MB). Free memory was 15.7 MB in the beginning and 21.4 MB in the end (delta: -5.7 MB). Peak memory consumption was 69.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:35:18,680 INFO L168 Benchmark]: Witness Printer took 42.23 ms. Allocated memory is still 49.8 MB. Free memory was 21.4 MB in the beginning and 19.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:18,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 10.0 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 315.37 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 15.4 MB in the beginning and 26.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 31.58 ms. Allocated memory is still 44.0 MB. Free memory was 26.8 MB in the beginning and 25.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 17.30 ms. Allocated memory is still 44.0 MB. Free memory was 25.4 MB in the beginning and 24.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 209.10 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 15.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 1495.69 ms. Allocated memory was 44.0 MB in the beginning and 49.8 MB in the end (delta: 5.8 MB). Free memory was 15.7 MB in the beginning and 21.4 MB in the end (delta: -5.7 MB). Peak memory consumption was 69.9 kB. Max. memory is 14.3 GB. * Witness Printer took 42.23 ms. Allocated memory is still 49.8 MB. Free memory was 21.4 MB in the beginning and 19.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax185 hnf107 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq175 hnf96 smp100 dnf155 smp92 tf105 neg95 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1948c874=0, \result=0, i=-5} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i < 0 Loop: [L10] COND FALSE !(i != -5) [L9] COND TRUE i < 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...