./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 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-restricted-15/Ex06.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 3ac2445d235ff9d71a6974ac9afce215f9983492 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 18:23:35,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 18:23:35,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 18:23:35,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 18:23:35,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 18:23:35,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 18:23:35,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 18:23:35,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 18:23:35,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 18:23:35,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 18:23:35,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 18:23:35,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 18:23:35,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 18:23:35,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 18:23:35,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 18:23:35,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 18:23:35,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 18:23:35,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 18:23:35,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 18:23:35,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 18:23:35,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 18:23:35,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 18:23:35,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 18:23:35,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 18:23:35,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 18:23:35,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 18:23:35,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 18:23:35,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 18:23:35,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 18:23:35,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 18:23:35,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 18:23:35,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 18:23:35,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 18:23:35,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 18:23:35,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 18:23:35,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 18:23:35,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 18:23:35,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 18:23:35,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 18:23:35,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 18:23:35,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 18:23:35,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-07-06 18:23:35,571 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 18:23:35,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 18:23:35,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 18:23:35,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 18:23:35,572 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 18:23:35,572 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 18:23:35,573 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 18:23:35,573 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 18:23:35,573 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 18:23:35,573 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 18:23:35,573 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 18:23:35,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 18:23:35,573 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 18:23:35,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 18:23:35,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 18:23:35,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 18:23:35,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 18:23:35,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 18:23:35,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 18:23:35,574 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 18:23:35,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 18:23:35,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 18:23:35,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 18:23:35,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 18:23:35,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 18:23:35,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 18:23:35,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 18:23:35,576 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 18:23:35,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ac2445d235ff9d71a6974ac9afce215f9983492 [2021-07-06 18:23:35,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 18:23:35,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 18:23:35,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 18:23:35,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 18:23:35,802 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 18:23:35,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex06.c [2021-07-06 18:23:35,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66853195b/c863e6be40f44ad3b78af89d37d1f675/FLAGa7324e7b5 [2021-07-06 18:23:36,144 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 18:23:36,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex06.c [2021-07-06 18:23:36,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66853195b/c863e6be40f44ad3b78af89d37d1f675/FLAGa7324e7b5 [2021-07-06 18:23:36,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66853195b/c863e6be40f44ad3b78af89d37d1f675 [2021-07-06 18:23:36,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 18:23:36,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 18:23:36,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 18:23:36,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 18:23:36,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 18:23:36,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2648809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36, skipping insertion in model container [2021-07-06 18:23:36,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 18:23:36,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 18:23:36,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:23:36,668 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 18:23:36,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:23:36,682 INFO L208 MainTranslator]: Completed translation [2021-07-06 18:23:36,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36 WrapperNode [2021-07-06 18:23:36,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 18:23:36,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 18:23:36,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 18:23:36,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 18:23:36,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 18:23:36,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 18:23:36,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 18:23:36,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 18:23:36,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 18:23:36,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 18:23:36,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 18:23:36,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 18:23:36,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36" (1/1) ... [2021-07-06 18:23:36,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:36,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:36,770 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) [2021-07-06 18:23:36,797 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 [2021-07-06 18:23:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 18:23:36,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 18:23:36,903 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 18:23:36,904 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-07-06 18:23:36,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:23:36 BoogieIcfgContainer [2021-07-06 18:23:36,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 18:23:36,905 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 18:23:36,905 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 18:23:36,907 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 18:23:36,908 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:23:36,908 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 06:23:36" (1/3) ... [2021-07-06 18:23:36,908 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c21fe60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:23:36, skipping insertion in model container [2021-07-06 18:23:36,908 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:23:36,909 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:23:36" (2/3) ... [2021-07-06 18:23:36,909 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c21fe60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:23:36, skipping insertion in model container [2021-07-06 18:23:36,909 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:23:36,909 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:23:36" (3/3) ... [2021-07-06 18:23:36,910 INFO L389 chiAutomizerObserver]: Analyzing ICFG Ex06.c [2021-07-06 18:23:36,938 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 18:23:36,938 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 18:23:36,938 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 18:23:36,939 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 18:23:36,939 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 18:23:36,939 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 18:23:36,939 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 18:23:36,939 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 18:23:36,947 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) [2021-07-06 18:23:36,956 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-07-06 18:23:36,956 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:23:36,956 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:23:36,959 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:23:36,960 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:23:36,960 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 18:23:36,960 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) [2021-07-06 18:23:36,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-07-06 18:23:36,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:23:36,961 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:23:36,961 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:23:36,962 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:23:36,966 INFO L791 eck$LassoCheckResult]: Stem: 4#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; 5#L13-1true [2021-07-06 18:23:36,966 INFO L793 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 3#L10true assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 9#L10-2true assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 5#L13-1true [2021-07-06 18:23:36,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:36,981 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-07-06 18:23:36,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:36,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956317107] [2021-07-06 18:23:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:36,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,039 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,046 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,055 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:37,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:37,058 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2021-07-06 18:23:37,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:37,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324188075] [2021-07-06 18:23:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:37,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:23:37,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:23:37,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:23:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:23:37,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 18:23:37,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324188075] [2021-07-06 18:23:37,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324188075] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 18:23:37,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 18:23:37,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 18:23:37,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505757822] [2021-07-06 18:23:37,130 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 18:23:37,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 18:23:37,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 18:23:37,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 18:23:37,140 INFO L87 Difference]: Start difference. 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, 2 states have (on average 1.5) 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) [2021-07-06 18:23:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 18:23:37,196 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-07-06 18:23:37,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 18:23:37,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-07-06 18:23:37,199 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-07-06 18:23:37,201 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 7 states and 10 transitions. [2021-07-06 18:23:37,201 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-07-06 18:23:37,201 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-07-06 18:23:37,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-07-06 18:23:37,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:23:37,202 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-07-06 18:23:37,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-07-06 18:23:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-07-06 18:23:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:23:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-07-06 18:23:37,217 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-07-06 18:23:37,217 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-07-06 18:23:37,217 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 18:23:37,217 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-07-06 18:23:37,218 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-07-06 18:23:37,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:23:37,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:23:37,218 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:23:37,218 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:23:37,218 INFO L791 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 36#L13-1 [2021-07-06 18:23:37,219 INFO L793 eck$LassoCheckResult]: Loop: 36#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 32#L10 assume !(main_~i~0 > 0); 34#L10-2 assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 36#L13-1 [2021-07-06 18:23:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:37,219 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-07-06 18:23:37,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:37,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379995650] [2021-07-06 18:23:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:37,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,222 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,223 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,224 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:37,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:37,224 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2021-07-06 18:23:37,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:37,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845344006] [2021-07-06 18:23:37,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:37,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,228 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,230 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,230 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:37,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 1 times [2021-07-06 18:23:37,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:37,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308775272] [2021-07-06 18:23:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:37,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,241 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,243 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,244 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:37,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 18:23:37,290 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:23:37,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:23:37,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:23:37,290 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:23:37,291 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-07-06 18:23:37,291 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:37,291 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:23:37,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:23:37,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration2_Loop [2021-07-06 18:23:37,291 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:23:37,291 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:23:37,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:37,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:37,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:37,384 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:23:37,385 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-07-06 18:23:37,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:37,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:37,393 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) [2021-07-06 18:23:37,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:23:37,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:23:37,413 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 [2021-07-06 18:23:37,445 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 [2021-07-06 18:23:37,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:37,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:37,457 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) [2021-07-06 18:23:37,458 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 [2021-07-06 18:23:37,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-07-06 18:23:37,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:23:37,485 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-07-06 18:23:37,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-07-06 18:23:37,503 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:23:37,504 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:23:37,504 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:23:37,504 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:23:37,504 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-07-06 18:23:37,504 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:37,504 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:23:37,504 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:23:37,504 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration2_Loop [2021-07-06 18:23:37,504 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:23:37,504 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:23:37,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:37,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:37,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:37,612 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:23:37,615 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-07-06 18:23:37,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:37,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:37,620 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) [2021-07-06 18:23:37,621 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 [2021-07-06 18:23:37,622 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 [2021-07-06 18:23:37,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:23:37,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:23:37,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:23:37,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:23:37,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:23:37,640 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:23:37,640 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:23:37,648 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-07-06 18:23:37,653 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-07-06 18:23:37,653 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-07-06 18:23:37,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:37,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:37,675 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) [2021-07-06 18:23:37,682 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 [2021-07-06 18:23:37,684 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-07-06 18:23:37,684 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-07-06 18:23:37,685 INFO L513 LassoAnalysis]: Proved termination. [2021-07-06 18:23:37,685 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-07-06 18:23:37,702 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 [2021-07-06 18:23:37,704 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-07-06 18:23:37,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:23:37,725 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:23:37,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:23:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:23:37,732 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 18:23:37,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:23:37,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 18:23:37,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 18:23:37,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 18:23:37,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 18:23:37,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 18:23:37,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 18:23:37,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 18:23:37,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 18:23:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:23:37,739 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-07-06 18:23:37,740 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-07-06 18:23:37,759 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 16 states and 22 transitions. Complement of second has 5 states. [2021-07-06 18:23:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-07-06 18:23:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-07-06 18:23:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-07-06 18:23:37,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 1 letters. Loop has 3 letters. [2021-07-06 18:23:37,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:23:37,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 3 letters. [2021-07-06 18:23:37,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:23:37,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 1 letters. Loop has 6 letters. [2021-07-06 18:23:37,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:23:37,762 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2021-07-06 18:23:37,763 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-07-06 18:23:37,764 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 18 transitions. [2021-07-06 18:23:37,764 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-07-06 18:23:37,764 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-07-06 18:23:37,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2021-07-06 18:23:37,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-07-06 18:23:37,764 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-07-06 18:23:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2021-07-06 18:23:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 8. [2021-07-06 18:23:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) 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) [2021-07-06 18:23:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-07-06 18:23:37,766 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-07-06 18:23:37,766 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-07-06 18:23:37,766 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 18:23:37,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-07-06 18:23:37,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-07-06 18:23:37,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:23:37,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:23:37,767 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 18:23:37,767 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:23:37,767 INFO L791 eck$LassoCheckResult]: Stem: 91#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 92#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 87#L10 [2021-07-06 18:23:37,767 INFO L793 eck$LassoCheckResult]: Loop: 87#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 88#L10-2 assume !(main_~i~0 < 0); 93#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 87#L10 [2021-07-06 18:23:37,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:37,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-07-06 18:23:37,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:37,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268030279] [2021-07-06 18:23:37,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:37,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,771 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,772 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,773 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:37,773 INFO L82 PathProgramCache]: Analyzing trace with hash 42945, now seen corresponding path program 1 times [2021-07-06 18:23:37,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:37,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067589499] [2021-07-06 18:23:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:37,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,776 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,778 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,778 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:37,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:37,779 INFO L82 PathProgramCache]: Analyzing trace with hash 29863736, now seen corresponding path program 1 times [2021-07-06 18:23:37,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:37,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175930893] [2021-07-06 18:23:37,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:37,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,783 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:37,786 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:37,787 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:37,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:37,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:23:37,812 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:23:37,812 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:23:37,812 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:23:37,812 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:23:37,813 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-07-06 18:23:37,813 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:37,813 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:23:37,813 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:23:37,813 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration3_Loop [2021-07-06 18:23:37,813 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:23:37,813 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:23:37,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:37,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:37,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:37,852 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 [2021-07-06 18:23:37,889 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:23:37,890 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-07-06 18:23:37,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:37,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:37,897 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) [2021-07-06 18:23:37,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:23:37,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:23:37,913 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 [2021-07-06 18:23:37,930 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:23:37,930 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: [] [2021-07-06 18:23:37,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-07-06 18:23:37,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:37,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:37,949 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) [2021-07-06 18:23:37,950 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 [2021-07-06 18:23:37,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:23:37,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:23:37,969 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:23:37,969 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: [] [2021-07-06 18:23:37,991 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 [2021-07-06 18:23:37,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:37,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:37,992 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) [2021-07-06 18:23:37,993 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 [2021-07-06 18:23:37,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:23:37,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:23:38,017 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 [2021-07-06 18:23:38,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:38,018 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) [2021-07-06 18:23:38,019 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 [2021-07-06 18:23:38,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-07-06 18:23:38,024 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:23:38,052 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-07-06 18:23:38,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-07-06 18:23:38,055 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:23:38,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:23:38,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:23:38,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:23:38,056 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-07-06 18:23:38,056 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:38,056 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:23:38,056 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:23:38,056 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration3_Loop [2021-07-06 18:23:38,056 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:23:38,056 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:23:38,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:38,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:38,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:23:38,106 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:23:38,106 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-07-06 18:23:38,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:38,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:38,107 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) [2021-07-06 18:23:38,112 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 [2021-07-06 18:23:38,113 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 [2021-07-06 18:23:38,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:23:38,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:23:38,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:23:38,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:23:38,121 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:23:38,121 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:23:38,137 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:23:38,154 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 [2021-07-06 18:23:38,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:38,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:38,157 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) [2021-07-06 18:23:38,159 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 [2021-07-06 18:23:38,160 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 [2021-07-06 18:23:38,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:23:38,165 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:23:38,165 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:23:38,165 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:23:38,170 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:23:38,170 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:23:38,180 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:23:38,195 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 [2021-07-06 18:23:38,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:38,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:38,196 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) [2021-07-06 18:23:38,196 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 [2021-07-06 18:23:38,198 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 [2021-07-06 18:23:38,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:23:38,203 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:23:38,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:23:38,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:23:38,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:23:38,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:23:38,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:23:38,206 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-07-06 18:23:38,211 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-07-06 18:23:38,211 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-07-06 18:23:38,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:23:38,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:23:38,212 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) [2021-07-06 18:23:38,214 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 [2021-07-06 18:23:38,216 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-07-06 18:23:38,216 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-07-06 18:23:38,216 INFO L513 LassoAnalysis]: Proved termination. [2021-07-06 18:23:38,216 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-07-06 18:23:38,232 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 [2021-07-06 18:23:38,232 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-07-06 18:23:38,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:23:38,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:23:38,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:23:38,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:23:38,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:23:38,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:23:38,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:23:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:23:38,253 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 18:23:38,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:23:38,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 18:23:38,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:23:38,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 18:23:38,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 18:23:38,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:23:38,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 18:23:38,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:23:38,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:23:38,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:23:38,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:23:38,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:23:38,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:23:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:23:38,309 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 [2021-07-06 18:23:38,309 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-07-06 18:23:38,319 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 21 states and 28 transitions. Complement of second has 5 states. [2021-07-06 18:23:38,319 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 [2021-07-06 18:23:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-07-06 18:23:38,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-07-06 18:23:38,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-07-06 18:23:38,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 2 letters. Loop has 3 letters. [2021-07-06 18:23:38,321 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:23:38,321 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2021-07-06 18:23:38,321 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:23:38,321 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 2 letters. Loop has 6 letters. [2021-07-06 18:23:38,321 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:23:38,321 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2021-07-06 18:23:38,322 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-07-06 18:23:38,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 27 transitions. [2021-07-06 18:23:38,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-07-06 18:23:38,323 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-07-06 18:23:38,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2021-07-06 18:23:38,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-07-06 18:23:38,323 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2021-07-06 18:23:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2021-07-06 18:23:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2021-07-06 18:23:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 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) [2021-07-06 18:23:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2021-07-06 18:23:38,325 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2021-07-06 18:23:38,325 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2021-07-06 18:23:38,325 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 18:23:38,325 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 23 transitions. [2021-07-06 18:23:38,325 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-07-06 18:23:38,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:23:38,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:23:38,326 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-07-06 18:23:38,326 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:23:38,326 INFO L791 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 158#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 166#L10 assume !(main_~i~0 > 0); 153#L10-2 [2021-07-06 18:23:38,326 INFO L793 eck$LassoCheckResult]: Loop: 153#L10-2 assume !(main_~i~0 < 0); 162#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 152#L10 assume !(main_~i~0 > 0); 153#L10-2 [2021-07-06 18:23:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:38,326 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-07-06 18:23:38,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:38,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605094000] [2021-07-06 18:23:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:38,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:38,329 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:38,331 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:38,331 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:38,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:38,332 INFO L82 PathProgramCache]: Analyzing trace with hash 50297, now seen corresponding path program 1 times [2021-07-06 18:23:38,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:38,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368562907] [2021-07-06 18:23:38,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:38,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:38,334 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:38,335 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:38,336 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:38,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:23:38,336 INFO L82 PathProgramCache]: Analyzing trace with hash 925835413, now seen corresponding path program 1 times [2021-07-06 18:23:38,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:23:38,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570842258] [2021-07-06 18:23:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:23:38,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:23:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:38,339 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:23:38,340 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:23:38,341 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:23:38,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:23:38,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:23:38,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 18:23:38,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 06:23:38 BoogieIcfgContainer [2021-07-06 18:23:38,377 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 18:23:38,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 18:23:38,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 18:23:38,378 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 18:23:38,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:23:36" (3/4) ... [2021-07-06 18:23:38,380 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 18:23:38,396 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 18:23:38,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 18:23:38,397 INFO L168 Benchmark]: Toolchain (without parser) took 1817.57 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 37.3 MB in the beginning and 40.9 MB in the end (delta: -3.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:38,397 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 58.7 MB. Free memory was 39.0 MB in the beginning and 38.9 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:23:38,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 102.37 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 28.8 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:38,398 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.53 ms. Allocated memory is still 58.7 MB. Free memory was 28.7 MB in the beginning and 42.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:38,398 INFO L168 Benchmark]: Boogie Preprocessor took 16.35 ms. Allocated memory is still 58.7 MB. Free memory was 42.3 MB in the beginning and 41.5 MB in the end (delta: 880.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:23:38,398 INFO L168 Benchmark]: RCFGBuilder took 163.10 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 33.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:38,399 INFO L168 Benchmark]: BuchiAutomizer took 1472.22 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 32.9 MB in the beginning and 42.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:38,399 INFO L168 Benchmark]: Witness Printer took 18.79 ms. Allocated memory is still 75.5 MB. Free memory was 42.4 MB in the beginning and 40.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:23:38,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 58.7 MB. Free memory was 39.0 MB in the beginning and 38.9 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 102.37 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 28.8 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.53 ms. Allocated memory is still 58.7 MB. Free memory was 28.7 MB in the beginning and 42.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.35 ms. Allocated memory is still 58.7 MB. Free memory was 42.3 MB in the beginning and 41.5 MB in the end (delta: 880.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 163.10 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 33.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1472.22 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 32.9 MB in the beginning and 42.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 18.79 ms. Allocated memory is still 75.5 MB. Free memory was 42.4 MB in the beginning and 40.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. 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) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 3 locations. One deterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 16 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 4 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 1. Minimization of nondet autom 2. Automata minimization 9.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 14 SDslu, 3 SDs, 0 SdLazy, 30 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 39.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax186 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: 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@1d009a97=0, \result=0, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: 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 >= -5 && i <= 5 [L10] COND FALSE !(i > 0) Loop: [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 18:23:38,425 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...