./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Flip2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Flip2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc --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 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:07:28,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:07:28,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:07:28,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:07:28,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:07:28,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:07:28,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:07:28,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:07:28,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:07:28,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:07:28,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:07:28,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:07:28,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:07:28,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:07:28,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:07:28,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:07:28,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:07:28,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:07:28,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:07:28,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:07:28,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:07:28,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:07:28,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:07:28,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:07:28,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:07:28,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:07:28,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:07:28,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:07:28,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:07:28,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:07:28,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:07:28,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:07:28,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:07:28,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:07:28,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:07:28,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:07:28,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:07:28,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:07:28,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:07:28,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:07:28,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:07:28,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-02 20:07:28,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:07:28,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:07:28,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:07:28,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:07:28,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:07:28,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:07:28,952 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:07:28,953 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:07:28,953 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:07:28,953 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:07:28,954 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:07:28,954 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:07:28,954 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:07:28,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:07:28,955 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:07:28,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:07:28,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:07:28,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:07:28,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:07:28,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:07:28,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:07:28,956 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:07:28,956 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:07:28,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:07:28,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:07:28,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:07:28,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:07:28,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:07:28,959 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:07:28,960 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac [2022-11-02 20:07:29,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:07:29,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:07:29,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:07:29,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:07:29,290 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:07:29,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-restricted-15/Flip2.c [2022-11-02 20:07:29,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/data/e6d9b5dd6/ad566a5e6e524c52b2af2aeff82cd5e2/FLAG4a55fcc35 [2022-11-02 20:07:29,807 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:07:29,807 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/sv-benchmarks/c/termination-restricted-15/Flip2.c [2022-11-02 20:07:29,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/data/e6d9b5dd6/ad566a5e6e524c52b2af2aeff82cd5e2/FLAG4a55fcc35 [2022-11-02 20:07:30,196 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/data/e6d9b5dd6/ad566a5e6e524c52b2af2aeff82cd5e2 [2022-11-02 20:07:30,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:07:30,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:07:30,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:30,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:07:30,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:07:30,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25dbdaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30, skipping insertion in model container [2022-11-02 20:07:30,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:07:30,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:07:30,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:30,408 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:07:30,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:30,435 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:07:30,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30 WrapperNode [2022-11-02 20:07:30,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:30,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:30,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:07:30,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:07:30,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,463 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2022-11-02 20:07:30,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:30,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:07:30,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:07:30,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:07:30,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,481 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:07:30,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:07:30,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:07:30,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:07:30,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (1/1) ... [2022-11-02 20:07:30,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:30,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:30,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:30,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:07:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:07:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:07:30,632 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:07:30,634 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:07:30,701 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:07:30,708 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:07:30,709 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:07:30,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:30 BoogieIcfgContainer [2022-11-02 20:07:30,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:07:30,712 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:07:30,712 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:07:30,717 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:07:30,718 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:07:30,718 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:07:30" (1/3) ... [2022-11-02 20:07:30,719 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d179a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:07:30, skipping insertion in model container [2022-11-02 20:07:30,719 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:07:30,720 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:30" (2/3) ... [2022-11-02 20:07:30,720 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d179a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:07:30, skipping insertion in model container [2022-11-02 20:07:30,720 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:07:30,721 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:30" (3/3) ... [2022-11-02 20:07:30,722 INFO L332 chiAutomizerObserver]: Analyzing ICFG Flip2.c [2022-11-02 20:07:30,772 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:07:30,772 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:07:30,772 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:07:30,772 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:07:30,772 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:07:30,772 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:07:30,773 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:07:30,773 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:07:30,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) 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) [2022-11-02 20:07:30,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 20:07:30,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:07:30,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:07:30,799 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:07:30,799 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-02 20:07:30,799 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:07:30,800 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) 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) [2022-11-02 20:07:30,801 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 20:07:30,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:07:30,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:07:30,801 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:07:30,802 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-02 20:07:30,809 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 2#L19-2true [2022-11-02 20:07:30,809 INFO L750 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 9#L14true assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 2#L19-2true [2022-11-02 20:07:30,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:30,815 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-02 20:07:30,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:30,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510699045] [2022-11-02 20:07:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:30,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:30,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:30,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:30,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:30,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-11-02 20:07:30,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:30,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823033531] [2022-11-02 20:07:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:30,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:30,938 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:30,947 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:30,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:30,949 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-02 20:07:30,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:30,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846490841] [2022-11-02 20:07:30,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:30,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:30,960 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:30,968 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:31,084 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:31,085 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:31,085 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:31,085 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:31,086 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:07:31,086 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:31,086 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:31,086 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:31,086 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2022-11-02 20:07:31,087 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:31,087 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:31,127 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:31,141 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:31,146 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:31,247 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:31,248 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:07:31,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:31,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:31,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:31,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:31,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:31,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-02 20:07:31,316 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:31,316 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:31,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-02 20:07:31,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:31,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:31,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:31,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-02 20:07:31,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:31,387 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:31,409 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:31,409 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:31,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-11-02 20:07:31,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:31,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:31,444 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:31,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-02 20:07:31,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:31,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:31,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-11-02 20:07:31,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:31,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:31,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:31,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:07:31,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:31,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-02 20:07:31,851 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:07:31,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:31,856 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:31,856 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:31,856 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:31,856 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:31,857 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:07:31,857 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:31,857 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:31,857 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:31,857 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2022-11-02 20:07:31,857 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:31,857 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:31,859 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:31,876 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:31,880 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:31,951 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:31,956 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:07:31,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:31,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:31,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:31,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-02 20:07:31,966 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 [2022-11-02 20:07:31,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:31,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:31,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:31,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:31,989 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 20:07:31,989 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 20:07:32,007 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:32,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:32,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:32,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:32,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:32,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-02 20:07:32,040 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 [2022-11-02 20:07:32,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:32,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:32,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:32,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:32,054 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 20:07:32,054 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 20:07:32,060 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:32,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-11-02 20:07:32,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:32,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:32,085 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:32,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-02 20:07:32,088 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 [2022-11-02 20:07:32,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:32,101 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:32,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:32,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:32,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:32,104 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:32,105 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:32,123 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:07:32,131 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-02 20:07:32,131 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-02 20:07:32,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:32,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:32,138 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:32,180 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:07:32,180 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:07:32,181 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:07:32,181 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-11-02 20:07:32,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-02 20:07:32,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:32,225 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:07:32,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:32,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:07:32,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:32,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:32,356 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:07:32,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:32,424 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-02 20:07:32,427 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-02 20:07:32,492 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) Result 31 states and 44 transitions. Complement of second has 8 states. [2022-11-02 20:07:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-02 20:07:32,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-02 20:07:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2022-11-02 20:07:32,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-02 20:07:32,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:32,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-02 20:07:32,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:32,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-02 20:07:32,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:32,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 44 transitions. [2022-11-02 20:07:32,505 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-11-02 20:07:32,509 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 14 states and 20 transitions. [2022-11-02 20:07:32,510 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-02 20:07:32,510 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-02 20:07:32,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-11-02 20:07:32,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:07:32,511 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-11-02 20:07:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-11-02 20:07:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-11-02 20:07:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-11-02 20:07:32,535 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-02 20:07:32,535 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-02 20:07:32,535 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 20:07:32,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-11-02 20:07:32,536 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-11-02 20:07:32,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:07:32,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:07:32,537 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:07:32,537 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 20:07:32,537 INFO L748 eck$LassoCheckResult]: Stem: 83#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 84#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 85#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 80#L14 [2022-11-02 20:07:32,537 INFO L750 eck$LassoCheckResult]: Loop: 80#L14 assume !(main_~i~0#1 < main_~j~0#1); 89#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 79#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 80#L14 [2022-11-02 20:07:32,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:32,538 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-02 20:07:32,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:32,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731044113] [2022-11-02 20:07:32,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:32,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:32,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:32,548 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:32,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash 45829, now seen corresponding path program 1 times [2022-11-02 20:07:32,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:32,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977524197] [2022-11-02 20:07:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:32,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:32,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:32,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:32,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash 889694462, now seen corresponding path program 1 times [2022-11-02 20:07:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:32,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248664173] [2022-11-02 20:07:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:32,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:32,573 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:32,625 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:32,625 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:32,625 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:32,625 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:32,625 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:07:32,626 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:32,626 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:32,626 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:32,626 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2022-11-02 20:07:32,626 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:32,626 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:32,628 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:32,637 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:32,643 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:32,702 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:32,703 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:07:32,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:32,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:32,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:32,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-02 20:07:32,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:32,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:32,736 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:32,736 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: [] [2022-11-02 20:07:32,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:32,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:32,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:32,777 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:32,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:32,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:32,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-02 20:07:32,807 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:32,807 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:32,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:32,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:32,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:32,848 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:32,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:32,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:32,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-02 20:07:32,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:32,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:32,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:32,909 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:32,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:07:32,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:32,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-02 20:07:33,058 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:07:33,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:33,062 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:33,062 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:33,062 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:33,063 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:33,063 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:07:33,063 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:33,063 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:33,063 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:33,063 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2022-11-02 20:07:33,063 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:33,063 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:33,065 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:33,074 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:33,079 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:33,138 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:33,139 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:07:33,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:33,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:33,144 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:33,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-02 20:07:33,151 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 [2022-11-02 20:07:33,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:33,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:33,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:33,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:33,167 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 20:07:33,167 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 20:07:33,187 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:33,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:33,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:33,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:33,228 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:33,236 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 [2022-11-02 20:07:33,250 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:33,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:33,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:33,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:33,254 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 20:07:33,254 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 20:07:33,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-02 20:07:33,271 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:33,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:33,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:33,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:33,305 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:33,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-02 20:07:33,308 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 [2022-11-02 20:07:33,317 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:33,318 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:33,318 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:33,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:33,318 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:33,320 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:33,320 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:33,328 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:07:33,339 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-02 20:07:33,340 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-11-02 20:07:33,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:33,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:33,344 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:33,353 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:07:33,354 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:07:33,354 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:07:33,354 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-02 20:07:33,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-02 20:07:33,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:33,393 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:07:33,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:33,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:07:33,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:33,434 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:07:33,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:33,491 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-02 20:07:33,491 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-02 20:07:33,522 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 35 states and 50 transitions. Complement of second has 7 states. [2022-11-02 20:07:33,522 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 [2022-11-02 20:07:33,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-02 20:07:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-02 20:07:33,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 3 letters. [2022-11-02 20:07:33,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:33,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2022-11-02 20:07:33,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:33,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 6 letters. [2022-11-02 20:07:33,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:33,525 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2022-11-02 20:07:33,527 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-11-02 20:07:33,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 31 states and 45 transitions. [2022-11-02 20:07:33,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2022-11-02 20:07:33,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-11-02 20:07:33,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 45 transitions. [2022-11-02 20:07:33,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:07:33,528 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 45 transitions. [2022-11-02 20:07:33,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 45 transitions. [2022-11-02 20:07:33,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-11-02 20:07:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 states have internal predecessors, (38), 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) [2022-11-02 20:07:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 38 transitions. [2022-11-02 20:07:33,532 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 38 transitions. [2022-11-02 20:07:33,532 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 38 transitions. [2022-11-02 20:07:33,532 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-02 20:07:33,532 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 38 transitions. [2022-11-02 20:07:33,533 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-11-02 20:07:33,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:07:33,533 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:07:33,534 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-02 20:07:33,534 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 20:07:33,534 INFO L748 eck$LassoCheckResult]: Stem: 172#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 173#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 178#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 182#L14 assume !(main_~i~0#1 < main_~j~0#1); 174#L19 [2022-11-02 20:07:33,534 INFO L750 eck$LassoCheckResult]: Loop: 174#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 175#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 188#L14 assume !(main_~i~0#1 < main_~j~0#1); 174#L19 [2022-11-02 20:07:33,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:33,535 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-02 20:07:33,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:33,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091881806] [2022-11-02 20:07:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:33,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:33,540 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:33,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:33,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 1 times [2022-11-02 20:07:33,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:33,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378211369] [2022-11-02 20:07:33,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:33,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:33,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:33,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:33,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:33,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722640, now seen corresponding path program 1 times [2022-11-02 20:07:33,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:33,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967851352] [2022-11-02 20:07:33,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:33,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:33,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:33,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:33,591 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:33,591 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:33,592 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:33,592 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:33,592 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:07:33,592 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:33,592 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:33,592 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:33,592 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2022-11-02 20:07:33,592 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:33,592 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:33,593 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:33,597 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:33,600 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:33,637 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:33,637 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:07:33,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:33,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:33,639 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:33,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:33,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:33,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-02 20:07:33,670 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:33,670 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:33,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:33,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:33,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:33,698 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:33,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-02 20:07:33,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:33,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:33,719 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:33,719 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:33,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:33,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:33,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:33,760 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:33,773 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:33,773 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:33,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-02 20:07:33,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:33,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:33,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:33,852 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:33,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:07:33,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:33,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-02 20:07:34,062 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:07:34,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:34,066 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:34,066 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:34,066 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:34,066 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:34,066 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:07:34,067 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:34,067 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:34,067 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:34,067 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2022-11-02 20:07:34,067 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:34,067 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:34,068 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:34,078 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:34,086 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:34,130 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:34,130 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:07:34,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:34,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:34,132 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:34,135 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 [2022-11-02 20:07:34,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:34,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:34,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:34,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:34,152 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 20:07:34,153 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 20:07:34,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-02 20:07:34,190 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:34,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:34,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:34,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:34,231 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:34,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:34,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-02 20:07:34,239 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:07:34,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:34,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:34,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:34,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:34,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:34,251 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:34,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:34,262 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:07:34,267 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-02 20:07:34,267 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:07:34,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:34,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:34,269 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:34,271 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:07:34,271 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:07:34,271 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:07:34,271 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-11-02 20:07:34,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-02 20:07:34,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:34,312 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:07:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:34,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:07:34,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:34,350 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:07:34,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:34,384 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-02 20:07:34,384 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:34,415 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 63 states and 92 transitions. Complement of second has 5 states. [2022-11-02 20:07:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-02 20:07:34,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:34,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2022-11-02 20:07:34,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2022-11-02 20:07:34,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:34,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-02 20:07:34,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:34,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2022-11-02 20:07:34,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:34,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 92 transitions. [2022-11-02 20:07:34,427 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-11-02 20:07:34,429 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 56 states and 81 transitions. [2022-11-02 20:07:34,431 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-02 20:07:34,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-11-02 20:07:34,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2022-11-02 20:07:34,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:07:34,432 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 81 transitions. [2022-11-02 20:07:34,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2022-11-02 20:07:34,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2022-11-02 20:07:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 41 states have internal predecessors, (61), 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) [2022-11-02 20:07:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 61 transitions. [2022-11-02 20:07:34,441 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 61 transitions. [2022-11-02 20:07:34,441 INFO L428 stractBuchiCegarLoop]: Abstraction has 42 states and 61 transitions. [2022-11-02 20:07:34,441 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-02 20:07:34,441 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 61 transitions. [2022-11-02 20:07:34,444 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-11-02 20:07:34,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:07:34,445 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:07:34,446 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-02 20:07:34,446 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-02 20:07:34,447 INFO L748 eck$LassoCheckResult]: Stem: 301#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 302#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 307#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 328#L14 assume !(main_~i~0#1 < main_~j~0#1); 303#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 304#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 316#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 313#L19-2 [2022-11-02 20:07:34,447 INFO L750 eck$LassoCheckResult]: Loop: 313#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 323#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 313#L19-2 [2022-11-02 20:07:34,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:34,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722638, now seen corresponding path program 1 times [2022-11-02 20:07:34,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:34,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365778727] [2022-11-02 20:07:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:34,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:34,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:34,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365778727] [2022-11-02 20:07:34,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365778727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:34,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:34,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:07:34,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953164021] [2022-11-02 20:07:34,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:34,557 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:07:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:34,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 2 times [2022-11-02 20:07:34,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:34,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892247545] [2022-11-02 20:07:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:34,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:34,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:34,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:34,642 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:34,643 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:34,643 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:34,643 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:34,643 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:07:34,643 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:34,644 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:34,644 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:34,644 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2022-11-02 20:07:34,644 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:34,644 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:34,646 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:34,650 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:34,654 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:34,726 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:34,726 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:07:34,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:34,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:34,728 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:34,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:34,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:34,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-02 20:07:34,757 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:34,757 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:34,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:34,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:34,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:34,781 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:34,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-02 20:07:34,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:34,782 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:34,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:34,799 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:34,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:34,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:34,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:34,821 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:34,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-02 20:07:34,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:34,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:34,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-11-02 20:07:34,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:34,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:34,864 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:34,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-02 20:07:34,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:07:34,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:35,134 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:07:35,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-11-02 20:07:35,138 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:35,138 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:35,138 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:35,138 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:35,138 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:07:35,138 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:35,138 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:35,139 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:35,139 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2022-11-02 20:07:35,139 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:35,139 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:35,140 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:35,158 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:35,162 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:35,222 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:35,222 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:07:35,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:35,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:35,224 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:35,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-02 20:07:35,230 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 [2022-11-02 20:07:35,243 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:35,243 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:35,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:35,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:35,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:35,246 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:35,246 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:35,259 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:07:35,264 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:07:35,264 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:07:35,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:35,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:35,271 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:35,273 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:07:35,273 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:07:35,273 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:07:35,273 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-11-02 20:07:35,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-02 20:07:35,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:35,300 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:07:35,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:35,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:07:35,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:35,351 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:07:35,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:35,365 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-02 20:07:35,365 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-02 20:07:35,383 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 74 states and 105 transitions. Complement of second has 7 states. [2022-11-02 20:07:35,383 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 [2022-11-02 20:07:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-02 20:07:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-11-02 20:07:35,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 2 letters. [2022-11-02 20:07:35,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:35,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2022-11-02 20:07:35,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:35,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-02 20:07:35,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:35,386 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 105 transitions. [2022-11-02 20:07:35,387 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-11-02 20:07:35,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 58 states and 84 transitions. [2022-11-02 20:07:35,388 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-11-02 20:07:35,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-02 20:07:35,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 84 transitions. [2022-11-02 20:07:35,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:07:35,389 INFO L218 hiAutomatonCegarLoop]: Abstraction has 58 states and 84 transitions. [2022-11-02 20:07:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 84 transitions. [2022-11-02 20:07:35,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2022-11-02 20:07:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 42 states have internal predecessors, (63), 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) [2022-11-02 20:07:35,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions. [2022-11-02 20:07:35,393 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43 states and 63 transitions. [2022-11-02 20:07:35,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:35,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:35,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:35,398 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:35,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:35,416 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-11-02 20:07:35,416 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 69 transitions. [2022-11-02 20:07:35,417 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2022-11-02 20:07:35,418 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 45 states and 62 transitions. [2022-11-02 20:07:35,418 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-11-02 20:07:35,418 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-11-02 20:07:35,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 62 transitions. [2022-11-02 20:07:35,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:07:35,419 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-11-02 20:07:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 62 transitions. [2022-11-02 20:07:35,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2022-11-02 20:07:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 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) [2022-11-02 20:07:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2022-11-02 20:07:35,422 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 58 transitions. [2022-11-02 20:07:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:35,423 INFO L428 stractBuchiCegarLoop]: Abstraction has 41 states and 58 transitions. [2022-11-02 20:07:35,424 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-02 20:07:35,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 58 transitions. [2022-11-02 20:07:35,425 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2022-11-02 20:07:35,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:07:35,425 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:07:35,425 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-02 20:07:35,425 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 20:07:35,426 INFO L748 eck$LassoCheckResult]: Stem: 559#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 560#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 564#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 570#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 594#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 565#L14 assume !(main_~i~0#1 < main_~j~0#1); 566#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 562#L19-2 [2022-11-02 20:07:35,426 INFO L750 eck$LassoCheckResult]: Loop: 562#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 593#L14 assume !(main_~i~0#1 < main_~j~0#1); 561#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 562#L19-2 [2022-11-02 20:07:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1810655530, now seen corresponding path program 1 times [2022-11-02 20:07:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:35,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820747121] [2022-11-02 20:07:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:35,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:35,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820747121] [2022-11-02 20:07:35,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820747121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:35,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:35,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:07:35,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155250592] [2022-11-02 20:07:35,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:35,468 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:07:35,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash 40879, now seen corresponding path program 2 times [2022-11-02 20:07:35,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:35,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226860488] [2022-11-02 20:07:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:35,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:35,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:35,475 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:35,505 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:35,506 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:35,506 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:35,506 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:35,506 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:07:35,506 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:35,506 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:35,506 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:35,507 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2022-11-02 20:07:35,507 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:35,507 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:35,508 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:35,517 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:35,521 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:35,564 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:35,564 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:07:35,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:35,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:35,566 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:35,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-02 20:07:35,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:35,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:35,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:35,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:35,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:35,635 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:35,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:07:35,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:35,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-02 20:07:35,756 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:07:35,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-11-02 20:07:35,760 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:35,760 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:35,760 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:35,760 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:35,760 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:07:35,760 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:35,760 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:35,760 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:35,760 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2022-11-02 20:07:35,760 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:35,760 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:35,761 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:35,775 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:35,784 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:35,827 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:35,827 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:07:35,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:35,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:35,829 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:35,831 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 [2022-11-02 20:07:35,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:35,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:35,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:35,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:35,846 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 20:07:35,846 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 20:07:35,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-02 20:07:35,863 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:35,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:35,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:35,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:35,899 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:35,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-02 20:07:35,902 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 [2022-11-02 20:07:35,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:35,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:35,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:35,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:35,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:35,914 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:35,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:35,922 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:07:35,933 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2022-11-02 20:07:35,933 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-11-02 20:07:35,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:35,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:35,935 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:35,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-02 20:07:35,936 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:07:35,936 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:07:35,936 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:07:35,936 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-02 20:07:35,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-11-02 20:07:35,961 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:07:35,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:35,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:07:35,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:36,000 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:07:36,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:36,026 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-02 20:07:36,026 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-02 20:07:36,061 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) Result 74 states and 102 transitions. Complement of second has 5 states. [2022-11-02 20:07:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-02 20:07:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-02 20:07:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2022-11-02 20:07:36,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-02 20:07:36,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:36,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 3 letters. [2022-11-02 20:07:36,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:36,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 6 letters. [2022-11-02 20:07:36,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:36,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 102 transitions. [2022-11-02 20:07:36,066 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-11-02 20:07:36,066 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 57 states and 79 transitions. [2022-11-02 20:07:36,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2022-11-02 20:07:36,067 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2022-11-02 20:07:36,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 79 transitions. [2022-11-02 20:07:36,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:07:36,067 INFO L218 hiAutomatonCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-11-02 20:07:36,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 79 transitions. [2022-11-02 20:07:36,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2022-11-02 20:07:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 48 states have internal predecessors, (69), 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) [2022-11-02 20:07:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2022-11-02 20:07:36,071 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 69 transitions. [2022-11-02 20:07:36,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:36,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:36,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:36,082 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:36,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:36,096 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2022-11-02 20:07:36,097 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 66 transitions. [2022-11-02 20:07:36,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-02 20:07:36,100 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 47 states and 61 transitions. [2022-11-02 20:07:36,100 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-11-02 20:07:36,100 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2022-11-02 20:07:36,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 61 transitions. [2022-11-02 20:07:36,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:07:36,101 INFO L218 hiAutomatonCegarLoop]: Abstraction has 47 states and 61 transitions. [2022-11-02 20:07:36,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 61 transitions. [2022-11-02 20:07:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2022-11-02 20:07:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 34 states have internal predecessors, (47), 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) [2022-11-02 20:07:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2022-11-02 20:07:36,111 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 47 transitions. [2022-11-02 20:07:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:36,112 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 47 transitions. [2022-11-02 20:07:36,113 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-02 20:07:36,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 47 transitions. [2022-11-02 20:07:36,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-02 20:07:36,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:07:36,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:07:36,115 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-02 20:07:36,115 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1] [2022-11-02 20:07:36,115 INFO L748 eck$LassoCheckResult]: Stem: 823#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 824#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 825#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 834#L14 assume !(main_~i~0#1 < main_~j~0#1); 832#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 848#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 830#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 819#L19-2 [2022-11-02 20:07:36,115 INFO L750 eck$LassoCheckResult]: Loop: 819#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 820#L14 assume !(main_~i~0#1 < main_~j~0#1); 826#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 827#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 853#L14 assume !(main_~i~0#1 < main_~j~0#1); 850#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 851#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 852#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 819#L19-2 [2022-11-02 20:07:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724560, now seen corresponding path program 2 times [2022-11-02 20:07:36,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:36,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77617207] [2022-11-02 20:07:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:36,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:36,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:36,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:36,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2053356838, now seen corresponding path program 1 times [2022-11-02 20:07:36,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:36,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137530992] [2022-11-02 20:07:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:36,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:36,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:36,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:36,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:36,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:36,184 INFO L85 PathProgramCache]: Analyzing trace with hash 399570165, now seen corresponding path program 1 times [2022-11-02 20:07:36,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:36,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542409251] [2022-11-02 20:07:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:36,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:36,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:36,223 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:36,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:36,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-11-02 20:07:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:36,385 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:36,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:07:36 BoogieIcfgContainer [2022-11-02 20:07:36,428 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:07:36,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:07:36,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:07:36,429 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:07:36,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:30" (3/4) ... [2022-11-02 20:07:36,431 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-02 20:07:36,459 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:07:36,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:07:36,460 INFO L158 Benchmark]: Toolchain (without parser) took 6261.20ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 88.0MB in the beginning and 101.5MB in the end (delta: -13.5MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-11-02 20:07:36,461 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 37.9MB in the beginning and 37.9MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:07:36,461 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.51ms. Allocated memory is still 121.6MB. Free memory was 87.7MB in the beginning and 97.9MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:07:36,462 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.49ms. Allocated memory is still 121.6MB. Free memory was 97.9MB in the beginning and 96.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:07:36,462 INFO L158 Benchmark]: Boogie Preprocessor took 19.06ms. Allocated memory is still 121.6MB. Free memory was 96.7MB in the beginning and 95.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:07:36,462 INFO L158 Benchmark]: RCFGBuilder took 226.90ms. Allocated memory is still 121.6MB. Free memory was 95.4MB in the beginning and 87.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:07:36,463 INFO L158 Benchmark]: BuchiAutomizer took 5716.06ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 87.0MB in the beginning and 102.5MB in the end (delta: -15.5MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2022-11-02 20:07:36,463 INFO L158 Benchmark]: Witness Printer took 31.20ms. Allocated memory is still 146.8MB. Free memory was 102.5MB in the beginning and 101.5MB in the end (delta: 977.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:07:36,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 37.9MB in the beginning and 37.9MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.51ms. Allocated memory is still 121.6MB. Free memory was 87.7MB in the beginning and 97.9MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.49ms. Allocated memory is still 121.6MB. Free memory was 97.9MB in the beginning and 96.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.06ms. Allocated memory is still 121.6MB. Free memory was 96.7MB in the beginning and 95.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 226.90ms. Allocated memory is still 121.6MB. Free memory was 95.4MB in the beginning and 87.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5716.06ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 87.0MB in the beginning and 102.5MB in the end (delta: -15.5MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Witness Printer took 31.20ms. Allocated memory is still 146.8MB. Free memory was 102.5MB in the beginning and 101.5MB in the end (delta: 977.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function j and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -1 * j + i and consists of 3 locations. One deterministic module has affine ranking function j and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 35 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.6s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 4.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 39 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax176 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf92 smp100 dnf100 smp100 tf109 neg96 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 VAL [t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=2, j=2, t=0] [L14] COND FALSE !(i < j) VAL [i=2, j=2, t=0] [L19] COND FALSE !(i > j) [L22] i = i-1 VAL [i=1, j=2, t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=1, j=2, t=0] [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t VAL [i=2, j=1, t=1] Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 VAL [t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=2, j=2, t=0] [L14] COND FALSE !(i < j) VAL [i=2, j=2, t=0] [L19] COND FALSE !(i > j) [L22] i = i-1 VAL [i=1, j=2, t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=1, j=2, t=0] [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t VAL [i=2, j=1, t=1] Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-02 20:07:36,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827fc65-9acf-4941-aede-d728e39f1863/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)