./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.18.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/b.18.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 bd4093f0fb25d9d8e9de7e7010b28ffecefa6ef0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 18:31:00,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 18:31:00,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 18:31:00,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 18:31:00,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 18:31:00,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 18:31:00,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 18:31:00,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 18:31:00,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 18:31:00,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 18:31:00,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 18:31:00,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 18:31:00,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 18:31:00,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 18:31:00,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 18:31:00,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 18:31:00,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 18:31:00,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 18:31:00,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 18:31:00,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 18:31:00,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 18:31:00,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 18:31:00,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 18:31:00,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 18:31:00,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 18:31:00,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 18:31:00,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 18:31:00,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 18:31:00,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 18:31:00,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 18:31:00,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 18:31:00,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 18:31:00,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 18:31:00,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 18:31:00,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 18:31:00,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 18:31:00,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 18:31:00,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 18:31:00,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 18:31:00,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 18:31:00,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 18:31:00,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-07-06 18:31:00,557 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 18:31:00,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 18:31:00,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 18:31:00,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 18:31:00,559 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 18:31:00,559 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 18:31:00,559 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 18:31:00,560 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 18:31:00,560 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 18:31:00,560 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 18:31:00,560 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 18:31:00,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 18:31:00,560 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 18:31:00,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 18:31:00,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 18:31:00,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 18:31:00,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 18:31:00,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 18:31:00,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 18:31:00,562 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 18:31:00,562 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 18:31:00,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 18:31:00,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 18:31:00,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 18:31:00,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 18:31:00,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 18:31:00,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 18:31:00,564 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 18:31:00,564 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd4093f0fb25d9d8e9de7e7010b28ffecefa6ef0 [2021-07-06 18:31:00,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 18:31:00,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 18:31:00,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 18:31:00,813 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 18:31:00,814 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 18:31:00,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.18.c [2021-07-06 18:31:00,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ce2719ec/345e13192cd04cde899ba7142783b17d/FLAG6f6cdc716 [2021-07-06 18:31:01,201 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 18:31:01,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.18.c [2021-07-06 18:31:01,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ce2719ec/345e13192cd04cde899ba7142783b17d/FLAG6f6cdc716 [2021-07-06 18:31:01,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ce2719ec/345e13192cd04cde899ba7142783b17d [2021-07-06 18:31:01,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 18:31:01,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 18:31:01,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 18:31:01,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 18:31:01,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 18:31:01,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b0db6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01, skipping insertion in model container [2021-07-06 18:31:01,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 18:31:01,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 18:31:01,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:31:01,336 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 18:31:01,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:31:01,360 INFO L208 MainTranslator]: Completed translation [2021-07-06 18:31:01,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01 WrapperNode [2021-07-06 18:31:01,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 18:31:01,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 18:31:01,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 18:31:01,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 18:31:01,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 18:31:01,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 18:31:01,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 18:31:01,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 18:31:01,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 18:31:01,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 18:31:01,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 18:31:01,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 18:31:01,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01" (1/1) ... [2021-07-06 18:31:01,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:01,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:31:01,454 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 18:31:01,518 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 18:31:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 18:31:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 18:31:01,683 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 18:31:01,684 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-06 18:31:01,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:31:01 BoogieIcfgContainer [2021-07-06 18:31:01,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 18:31:01,687 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 18:31:01,688 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 18:31:01,690 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 18:31:01,690 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:31:01,691 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 06:31:01" (1/3) ... [2021-07-06 18:31:01,692 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f72460b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:31:01, skipping insertion in model container [2021-07-06 18:31:01,692 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:31:01,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:31:01" (2/3) ... [2021-07-06 18:31:01,692 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f72460b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:31:01, skipping insertion in model container [2021-07-06 18:31:01,692 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:31:01,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:31:01" (3/3) ... [2021-07-06 18:31:01,693 INFO L389 chiAutomizerObserver]: Analyzing ICFG b.18.c [2021-07-06 18:31:01,748 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 18:31:01,749 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 18:31:01,749 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 18:31:01,749 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 18:31:01,749 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 18:31:01,749 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 18:31:01,749 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 18:31:01,749 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 18:31:01,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 18:31:01,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-07-06 18:31:01,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:31:01,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:31:01,777 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:31:01,778 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:31:01,778 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 18:31:01,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 18:31:01,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-07-06 18:31:01,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:31:01,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:31:01,779 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:31:01,780 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:31:01,784 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L15-3true [2021-07-06 18:31:01,784 INFO L793 eck$LassoCheckResult]: Loop: 5#L15-3true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3#L10true assume !(main_~x~0 > main_~y~0); 8#L15-2true assume !(main_~y~0 > 0); 5#L15-3true [2021-07-06 18:31:01,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:01,790 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-07-06 18:31:01,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:01,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128699525] [2021-07-06 18:31:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:01,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:01,851 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:01,856 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:01,868 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:31:01,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:01,871 INFO L82 PathProgramCache]: Analyzing trace with hash 40272, now seen corresponding path program 1 times [2021-07-06 18:31:01,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:01,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684110628] [2021-07-06 18:31:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:01,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:31:01,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:01,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 18:31:01,927 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 18:31:01,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 18:31:01,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684110628] [2021-07-06 18:31:01,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684110628] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 18:31:01,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 18:31:01,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-07-06 18:31:01,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878614180] [2021-07-06 18:31:01,936 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 18:31:01,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 18:31:01,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 18:31:01,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 18:31:01,966 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:31:02,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 18:31:02,016 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-07-06 18:31:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 18:31:02,017 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-07-06 18:31:02,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-07-06 18:31:02,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 7 states and 10 transitions. [2021-07-06 18:31:02,021 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-07-06 18:31:02,021 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-07-06 18:31:02,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-07-06 18:31:02,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:31:02,021 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-07-06 18:31:02,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-07-06 18:31:02,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2021-07-06 18:31:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 18:31:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2021-07-06 18:31:02,051 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2021-07-06 18:31:02,051 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2021-07-06 18:31:02,051 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 18:31:02,051 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2021-07-06 18:31:02,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-07-06 18:31:02,051 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:31:02,051 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:31:02,051 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:31:02,051 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:31:02,052 INFO L791 eck$LassoCheckResult]: Stem: 36#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 37#L15-3 [2021-07-06 18:31:02,052 INFO L793 eck$LassoCheckResult]: Loop: 37#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 33#L10 assume main_~x~0 > main_~y~0; 35#L11-2 assume !(main_~x~0 > 0); 37#L15-3 [2021-07-06 18:31:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:02,052 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-07-06 18:31:02,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:02,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962512909] [2021-07-06 18:31:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:02,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,063 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,065 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,065 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:31:02,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:02,066 INFO L82 PathProgramCache]: Analyzing trace with hash 39824, now seen corresponding path program 1 times [2021-07-06 18:31:02,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:02,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321239267] [2021-07-06 18:31:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:02,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:31:02,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 18:31:02,087 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 18:31:02,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 18:31:02,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321239267] [2021-07-06 18:31:02,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321239267] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 18:31:02,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 18:31:02,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-07-06 18:31:02,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498378096] [2021-07-06 18:31:02,088 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 18:31:02,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 18:31:02,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 18:31:02,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 18:31:02,089 INFO L87 Difference]: Start difference. First operand 6 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:31:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 18:31:02,111 INFO L93 Difference]: Finished difference Result 8 states and 11 transitions. [2021-07-06 18:31:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 18:31:02,112 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 11 transitions. [2021-07-06 18:31:02,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-07-06 18:31:02,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 11 transitions. [2021-07-06 18:31:02,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-07-06 18:31:02,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-07-06 18:31:02,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-07-06 18:31:02,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:31:02,113 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-07-06 18:31:02,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-07-06 18:31:02,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-07-06 18:31:02,114 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 18:31:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-07-06 18:31:02,114 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-07-06 18:31:02,114 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-07-06 18:31:02,114 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 18:31:02,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-07-06 18:31:02,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-07-06 18:31:02,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:31:02,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:31:02,115 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:31:02,115 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-07-06 18:31:02,115 INFO L791 eck$LassoCheckResult]: Stem: 56#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 57#L15-3 [2021-07-06 18:31:02,115 INFO L793 eck$LassoCheckResult]: Loop: 57#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 53#L10 assume !(main_~x~0 > main_~y~0); 54#L15-2 assume !!(main_~y~0 > 0);main_~y~0 := main_~y~0 - 1; 58#L15-2 assume !(main_~y~0 > 0); 57#L15-3 [2021-07-06 18:31:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:02,115 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-07-06 18:31:02,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:02,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775433513] [2021-07-06 18:31:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:02,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,118 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,119 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,120 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:31:02,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:02,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1248528, now seen corresponding path program 1 times [2021-07-06 18:31:02,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:02,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741825983] [2021-07-06 18:31:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:02,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,128 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,133 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,134 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:31:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:02,134 INFO L82 PathProgramCache]: Analyzing trace with hash 29877679, now seen corresponding path program 1 times [2021-07-06 18:31:02,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:02,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145175357] [2021-07-06 18:31:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:02,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,138 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,141 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,142 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:31:02,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-06 18:31:02,223 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:31:02,223 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:31:02,223 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:31:02,224 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:31:02,224 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-07-06 18:31:02,224 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:02,224 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:31:02,224 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:31:02,224 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2021-07-06 18:31:02,224 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:31:02,224 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:31:02,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:31:02,271 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 18:31:02,274 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 18:31:02,351 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:31:02,352 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-07-06 18:31:02,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:02,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:31:02,369 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 18:31:02,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:31:02,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:31:02,420 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 18:31:02,435 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 18:31:02,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:02,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:31:02,436 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 18:31:02,437 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 18:31:02,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-07-06 18:31:02,439 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:31:02,519 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-07-06 18:31:02,524 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 18:31:02,524 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:31:02,524 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:31:02,524 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:31:02,524 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:31:02,524 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-07-06 18:31:02,525 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:02,525 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:31:02,525 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:31:02,525 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2021-07-06 18:31:02,525 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:31:02,525 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:31:02,526 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 18:31:02,535 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 18:31:02,537 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 18:31:02,590 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:31:02,593 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-07-06 18:31:02,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:02,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:31:02,595 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 18:31:02,596 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 18:31:02,597 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 18:31:02,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:31:02,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:31:02,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:31:02,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:31:02,605 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:31:02,607 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:31:02,607 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:31:02,622 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-07-06 18:31:02,627 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-07-06 18:31:02,627 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-07-06 18:31:02,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:02,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:31:02,630 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 18:31:02,632 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 18:31:02,677 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-07-06 18:31:02,677 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-07-06 18:31:02,678 INFO L513 LassoAnalysis]: Proved termination. [2021-07-06 18:31:02,678 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-07-06 18:31:02,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-07-06 18:31:02,711 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-07-06 18:31:02,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:31:02,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:31:02,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:31:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:31:02,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 18:31:02,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:31:02,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 18:31:02,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 18:31:02,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 18:31:02,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-06 18:31:02,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:31:02,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:31:02,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:31:02,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:31:02,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:31:02,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:31:02,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:31:02,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:31:02,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:31:02,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:31:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-06 18:31:02,785 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 18:31:02,785 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 18:31:02,830 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 16 states and 23 transitions. Complement of second has 6 states. [2021-07-06 18:31:02,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-07-06 18:31:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 18:31:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-07-06 18:31:02,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2021-07-06 18:31:02,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:31:02,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 4 letters. [2021-07-06 18:31:02,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:31:02,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 8 letters. [2021-07-06 18:31:02,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:31:02,833 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2021-07-06 18:31:02,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-07-06 18:31:02,845 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 15 states and 21 transitions. [2021-07-06 18:31:02,846 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-07-06 18:31:02,846 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-07-06 18:31:02,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2021-07-06 18:31:02,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-07-06 18:31:02,846 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2021-07-06 18:31:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2021-07-06 18:31:02,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2021-07-06 18:31:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 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 18:31:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2021-07-06 18:31:02,847 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2021-07-06 18:31:02,847 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2021-07-06 18:31:02,847 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 18:31:02,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2021-07-06 18:31:02,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-07-06 18:31:02,848 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:31:02,848 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:31:02,848 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 18:31:02,848 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-07-06 18:31:02,848 INFO L791 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 121#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 115#L10 [2021-07-06 18:31:02,848 INFO L793 eck$LassoCheckResult]: Loop: 115#L10 assume main_~x~0 > main_~y~0; 116#L11-2 assume !!(main_~x~0 > 0);main_~x~0 := main_~x~0 - 1; 125#L11-2 assume !(main_~x~0 > 0); 122#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 115#L10 [2021-07-06 18:31:02,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:02,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-07-06 18:31:02,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:02,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963177767] [2021-07-06 18:31:02,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:02,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,851 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,852 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,853 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:31:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1332576, now seen corresponding path program 1 times [2021-07-06 18:31:02,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:02,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889115008] [2021-07-06 18:31:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:02,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:31:02,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:31:02,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:31:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-06 18:31:02,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 18:31:02,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889115008] [2021-07-06 18:31:02,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889115008] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 18:31:02,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 18:31:02,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 18:31:02,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272230582] [2021-07-06 18:31:02,877 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 18:31:02,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 18:31:02,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 18:31:02,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 18:31:02,878 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 8 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 18:31:02,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 18:31:02,882 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2021-07-06 18:31:02,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 18:31:02,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2021-07-06 18:31:02,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-07-06 18:31:02,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2021-07-06 18:31:02,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-07-06 18:31:02,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-07-06 18:31:02,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2021-07-06 18:31:02,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-07-06 18:31:02,884 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-07-06 18:31:02,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2021-07-06 18:31:02,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-07-06 18:31:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 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 18:31:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2021-07-06 18:31:02,885 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-07-06 18:31:02,885 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-07-06 18:31:02,885 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-07-06 18:31:02,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2021-07-06 18:31:02,885 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-07-06 18:31:02,886 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:31:02,886 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:31:02,886 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-07-06 18:31:02,886 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-07-06 18:31:02,886 INFO L791 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 147#L10 assume main_~x~0 > main_~y~0; 148#L11-2 [2021-07-06 18:31:02,886 INFO L793 eck$LassoCheckResult]: Loop: 148#L11-2 assume !!(main_~x~0 > 0);main_~x~0 := main_~x~0 - 1; 148#L11-2 [2021-07-06 18:31:02,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:02,886 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-07-06 18:31:02,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:02,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297132227] [2021-07-06 18:31:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:02,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,897 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,910 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,911 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:31:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:02,911 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2021-07-06 18:31:02,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:02,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164700040] [2021-07-06 18:31:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:02,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,913 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,914 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,914 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:31:02,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:02,914 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2021-07-06 18:31:02,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:31:02,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326704007] [2021-07-06 18:31:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:31:02,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:31:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,917 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:31:02,919 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:31:02,919 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:31:02,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:02,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 18:31:02,935 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:31:02,935 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:31:02,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:31:02,935 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:31:02,935 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-07-06 18:31:02,935 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:02,935 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:31:02,935 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:31:02,935 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2021-07-06 18:31:02,935 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:31:02,935 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:31:02,936 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 18:31:02,938 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 18:31:02,942 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 18:31:02,981 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:31:02,981 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-07-06 18:31:02,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:02,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:31:02,982 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 18:31:02,997 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 18:31:02,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:31:02,999 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:31:03,016 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:31:03,017 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 18:31:03,032 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 18:31:03,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:03,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:31:03,033 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 18:31:03,034 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 18:31:03,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:31:03,035 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:31:03,071 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 18:31:03,072 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:03,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:31:03,073 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 18:31:03,073 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 18:31:03,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-07-06 18:31:03,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:31:03,117 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-07-06 18:31:03,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-07-06 18:31:03,131 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:31:03,131 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:31:03,131 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:31:03,131 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:31:03,131 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-07-06 18:31:03,131 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:03,131 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:31:03,131 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:31:03,131 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2021-07-06 18:31:03,131 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:31:03,131 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:31:03,132 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 18:31:03,135 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 18:31:03,140 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 18:31:03,172 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:31:03,172 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-07-06 18:31:03,172 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:03,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:31:03,196 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 18:31:03,240 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 18:31:03,244 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 18:31:03,250 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:31:03,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:31:03,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:31:03,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:31:03,254 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:31:03,254 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:31:03,277 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 18:31:03,277 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:31:03,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-07-06 18:31:03,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:03,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:31:03,295 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 18:31:03,296 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 18:31:03,297 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 18:31:03,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:31:03,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:31:03,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:31:03,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:31:03,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:31:03,304 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:31:03,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:31:03,313 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-07-06 18:31:03,316 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-07-06 18:31:03,316 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-07-06 18:31:03,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:31:03,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:31:03,325 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 18:31:03,327 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-07-06 18:31:03,330 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-07-06 18:31:03,330 INFO L513 LassoAnalysis]: Proved termination. [2021-07-06 18:31:03,330 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-07-06 18:31:03,330 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 18:31:03,347 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 18:31:03,347 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-07-06 18:31:03,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:31:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:31:03,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:31:03,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:31:03,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:03,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:31:03,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:03,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:31:03,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:03,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:31:03,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:03,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:31:03,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:03,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:31:03,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:03,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:31:03,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:03,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:31:03,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:31:03,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:31:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:31:03,382 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 18:31:03,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:31:03,383 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 18:31:03,383 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 18:31:03,383 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) 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 18:31:03,386 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) 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 10 states and 13 transitions. Complement of second has 2 states. [2021-07-06 18:31:03,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-07-06 18:31:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) 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 18:31:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2021-07-06 18:31:03,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2021-07-06 18:31:03,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:31:03,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2021-07-06 18:31:03,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:31:03,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2021-07-06 18:31:03,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:31:03,387 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2021-07-06 18:31:03,388 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-07-06 18:31:03,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2021-07-06 18:31:03,388 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-07-06 18:31:03,388 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-07-06 18:31:03,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-07-06 18:31:03,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:31:03,388 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 18:31:03,388 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 18:31:03,388 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 18:31:03,388 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-07-06 18:31:03,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-07-06 18:31:03,388 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-07-06 18:31:03,388 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-07-06 18:31:03,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 06:31:03 BoogieIcfgContainer [2021-07-06 18:31:03,392 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 18:31:03,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 18:31:03,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 18:31:03,393 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 18:31:03,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:31:01" (3/4) ... [2021-07-06 18:31:03,395 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-07-06 18:31:03,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 18:31:03,396 INFO L168 Benchmark]: Toolchain (without parser) took 2160.79 ms. Allocated memory was 75.5 MB in the beginning and 102.8 MB in the end (delta: 27.3 MB). Free memory was 60.4 MB in the beginning and 73.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-07-06 18:31:03,396 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 75.5 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:31:03,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 124.20 ms. Allocated memory is still 75.5 MB. Free memory was 60.2 MB in the beginning and 60.3 MB in the end (delta: -132.2 kB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-07-06 18:31:03,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.01 ms. Allocated memory is still 75.5 MB. Free memory was 60.3 MB in the beginning and 59.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:31:03,397 INFO L168 Benchmark]: Boogie Preprocessor took 12.59 ms. Allocated memory is still 75.5 MB. Free memory was 59.3 MB in the beginning and 58.3 MB in the end (delta: 977.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:31:03,397 INFO L168 Benchmark]: RCFGBuilder took 281.80 ms. Allocated memory is still 75.5 MB. Free memory was 58.3 MB in the beginning and 49.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 18:31:03,397 INFO L168 Benchmark]: BuchiAutomizer took 1704.76 ms. Allocated memory was 75.5 MB in the beginning and 102.8 MB in the end (delta: 27.3 MB). Free memory was 48.8 MB in the beginning and 73.4 MB in the end (delta: -24.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-07-06 18:31:03,397 INFO L168 Benchmark]: Witness Printer took 2.50 ms. Allocated memory is still 102.8 MB. Free memory is still 73.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:31:03,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 75.5 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 124.20 ms. Allocated memory is still 75.5 MB. Free memory was 60.2 MB in the beginning and 60.3 MB in the end (delta: -132.2 kB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.01 ms. Allocated memory is still 75.5 MB. Free memory was 60.3 MB in the beginning and 59.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.59 ms. Allocated memory is still 75.5 MB. Free memory was 59.3 MB in the beginning and 58.3 MB in the end (delta: 977.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 281.80 ms. Allocated memory is still 75.5 MB. Free memory was 58.3 MB in the beginning and 49.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1704.76 ms. Allocated memory was 75.5 MB in the beginning and 102.8 MB in the end (delta: 27.3 MB). Free memory was 48.8 MB in the beginning and 73.4 MB in the end (delta: -24.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Witness Printer took 2.50 ms. Allocated memory is still 102.8 MB. Free memory is still 73.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (3 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 2 locations. 3 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 10.1ms AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 34 SDtfs, 25 SDslu, 7 SDs, 0 SdLazy, 34 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.1ms Time LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax193 hnf96 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp88 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 104ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-07-06 18:31:03,427 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 18:31:03,644 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...