./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Piecewise.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Piecewise.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8 --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 ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 --- 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-e04fb08 [2022-11-16 11:07:02,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:07:02,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:07:02,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:07:02,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:07:02,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:07:02,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:07:02,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:07:02,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:07:02,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:07:02,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:07:02,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:07:02,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:07:02,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:07:02,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:07:02,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:07:02,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:07:02,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:07:02,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:07:02,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:07:02,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:07:02,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:07:02,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:07:02,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:07:02,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:07:02,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:07:02,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:07:02,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:07:02,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:07:02,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:07:02,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:07:02,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:07:02,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:07:02,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:07:02,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:07:02,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:07:02,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:07:02,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:07:02,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:07:02,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:07:02,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:07:02,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-16 11:07:02,943 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:07:02,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:07:02,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:07:02,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:07:02,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:07:02,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:07:02,947 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:07:02,947 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 11:07:02,947 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 11:07:02,947 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 11:07:02,949 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 11:07:02,949 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 11:07:02,950 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 11:07:02,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:07:02,950 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:07:02,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:07:02,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:07:02,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 11:07:02,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 11:07:02,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 11:07:02,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:07:02,952 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 11:07:02,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:07:02,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 11:07:02,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:07:02,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:07:02,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:07:02,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:07:02,957 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 11:07:02,958 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_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac2fbc3b92c237eee672d002679ee7a51e4ecff20f91c05c8145e18adc82f593 [2022-11-16 11:07:03,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:07:03,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:07:03,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:07:03,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:07:03,357 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:07:03,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/termination-crafted/Piecewise.c [2022-11-16 11:07:03,434 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/data/da7938fa1/50fb3804cf8041a3865811950265b0e5/FLAG4bcafbdf3 [2022-11-16 11:07:03,938 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:07:03,939 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/sv-benchmarks/c/termination-crafted/Piecewise.c [2022-11-16 11:07:03,948 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/data/da7938fa1/50fb3804cf8041a3865811950265b0e5/FLAG4bcafbdf3 [2022-11-16 11:07:04,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/data/da7938fa1/50fb3804cf8041a3865811950265b0e5 [2022-11-16 11:07:04,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:07:04,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:07:04,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:07:04,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:07:04,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:07:04,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc9ee6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04, skipping insertion in model container [2022-11-16 11:07:04,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:07:04,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:07:04,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:07:04,551 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:07:04,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:07:04,575 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:07:04,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04 WrapperNode [2022-11-16 11:07:04,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:07:04,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:07:04,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:07:04,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:07:04,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,604 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-11-16 11:07:04,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:07:04,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:07:04,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:07:04,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:07:04,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:07:04,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:07:04,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:07:04,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:07:04,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (1/1) ... [2022-11-16 11:07:04,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:04,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:04,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:04,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 11:07:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:07:04,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:07:04,781 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:07:04,783 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:07:04,885 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:07:04,895 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:07:04,895 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:07:04,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:07:04 BoogieIcfgContainer [2022-11-16 11:07:04,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:07:04,899 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 11:07:04,900 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 11:07:04,904 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 11:07:04,905 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:07:04,905 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 11:07:04" (1/3) ... [2022-11-16 11:07:04,906 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@588a5f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:07:04, skipping insertion in model container [2022-11-16 11:07:04,906 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:07:04,907 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:07:04" (2/3) ... [2022-11-16 11:07:04,907 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@588a5f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:07:04, skipping insertion in model container [2022-11-16 11:07:04,907 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:07:04,908 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:07:04" (3/3) ... [2022-11-16 11:07:04,909 INFO L332 chiAutomizerObserver]: Analyzing ICFG Piecewise.c [2022-11-16 11:07:04,997 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 11:07:04,998 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 11:07:04,998 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 11:07:04,998 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 11:07:04,998 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 11:07:04,998 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 11:07:04,998 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 11:07:04,999 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 11:07:05,007 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) [2022-11-16 11:07:05,032 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 11:07:05,032 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:07:05,032 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:07:05,039 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:07:05,039 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-16 11:07:05,040 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 11:07:05,040 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) [2022-11-16 11:07:05,041 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 11:07:05,041 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:07:05,042 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:07:05,042 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:07:05,042 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-16 11:07:05,050 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#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_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L26-2true [2022-11-16 11:07:05,052 INFO L750 eck$LassoCheckResult]: Loop: 4#L26-2true assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 5#L23true assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 4#L26-2true [2022-11-16 11:07:05,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:05,060 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-16 11:07:05,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:05,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705907255] [2022-11-16 11:07:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:05,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:05,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:05,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:05,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:05,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-11-16 11:07:05,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:05,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809835013] [2022-11-16 11:07:05,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:05,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:05,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:05,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:05,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:05,247 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-16 11:07:05,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:05,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182937517] [2022-11-16 11:07:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:05,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:05,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:05,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:05,384 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:05,385 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:05,385 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:05,385 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:05,385 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:07:05,386 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:05,386 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:05,386 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:05,386 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2022-11-16 11:07:05,387 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:05,387 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:05,423 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:05,449 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:05,455 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:05,545 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:05,545 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:07:05,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:05,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:05,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:05,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-16 11:07:05,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:05,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:05,664 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:07:05,664 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: [] [2022-11-16 11:07:05,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-16 11:07:05,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:05,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:05,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:05,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:05,702 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:05,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-16 11:07:05,747 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:07:05,747 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: [] [2022-11-16 11:07:05,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:05,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:05,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:05,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:05,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-16 11:07:05,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:05,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:05,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:05,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:05,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:05,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:05,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-16 11:07:05,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:07:05,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:05,886 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:07:05,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:05,895 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:05,895 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:05,895 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:05,895 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:05,895 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:07:05,895 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:05,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:05,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:05,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration1_Loop [2022-11-16 11:07:05,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:05,896 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:05,898 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:05,904 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:05,908 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:05,999 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:06,004 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:07:06,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:06,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:06,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:06,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-16 11:07:06,015 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 [2022-11-16 11:07:06,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:06,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:06,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:06,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:06,036 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-16 11:07:06,036 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-16 11:07:06,051 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:07:06,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-11-16 11:07:06,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:06,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:06,062 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:06,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-16 11:07:06,076 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 [2022-11-16 11:07:06,088 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:06,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:06,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:06,089 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:06,093 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-16 11:07:06,093 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-16 11:07:06,114 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:07:06,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:06,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:06,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:06,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:06,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-16 11:07:06,136 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 [2022-11-16 11:07:06,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:06,150 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:07:06,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:06,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:06,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:06,155 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:07:06,155 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:07:06,166 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:07:06,173 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 11:07:06,173 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 11:07:06,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:06,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:06,178 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:06,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-16 11:07:06,211 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:07:06,212 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:07:06,212 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:07:06,213 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-11-16 11:07:06,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:06,229 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:07:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:06,271 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:06,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:06,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:07:06,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:06,347 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 [2022-11-16 11:07:06,349 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) [2022-11-16 11:07:06,410 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 38 states and 49 transitions. Complement of second has 8 states. [2022-11-16 11:07:06,412 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 [2022-11-16 11:07:06,418 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) [2022-11-16 11:07:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2022-11-16 11:07:06,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-16 11:07:06,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:06,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-16 11:07:06,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:06,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-16 11:07:06,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:06,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 49 transitions. [2022-11-16 11:07:06,427 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-11-16 11:07:06,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 14 states and 20 transitions. [2022-11-16 11:07:06,433 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-16 11:07:06,433 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-16 11:07:06,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-11-16 11:07:06,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:07:06,435 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-11-16 11:07:06,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-11-16 11:07:06,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-11-16 11:07:06,462 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) [2022-11-16 11:07:06,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-11-16 11:07:06,464 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-16 11:07:06,464 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-16 11:07:06,464 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-16 11:07:06,464 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-11-16 11:07:06,465 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-11-16 11:07:06,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:07:06,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:07:06,466 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 11:07:06,466 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 11:07:06,467 INFO L748 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 87#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_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 97#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 89#L23 [2022-11-16 11:07:06,467 INFO L750 eck$LassoCheckResult]: Loop: 89#L23 assume !(main_~q~0#1 < main_~p~0#1); 92#L26 assume !(main_~p~0#1 < main_~q~0#1); 88#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 89#L23 [2022-11-16 11:07:06,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:06,468 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-16 11:07:06,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:06,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900817263] [2022-11-16 11:07:06,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:06,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:06,474 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:06,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash 45829, now seen corresponding path program 1 times [2022-11-16 11:07:06,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:06,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414985420] [2022-11-16 11:07:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:06,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:06,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:06,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414985420] [2022-11-16 11:07:06,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414985420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:06,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:06,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:07:06,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110022455] [2022-11-16 11:07:06,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:06,536 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:07:06,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:06,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:07:06,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:07:06,541 INFO L87 Difference]: Start difference. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:06,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:06,558 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2022-11-16 11:07:06,558 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2022-11-16 11:07:06,559 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 11:07:06,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2022-11-16 11:07:06,559 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-16 11:07:06,560 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-16 11:07:06,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-11-16 11:07:06,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:07:06,560 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-11-16 11:07:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-11-16 11:07:06,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-11-16 11:07:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2022-11-16 11:07:06,562 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-11-16 11:07:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:07:06,564 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-11-16 11:07:06,564 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-16 11:07:06,564 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2022-11-16 11:07:06,565 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 11:07:06,565 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:07:06,565 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:07:06,565 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-16 11:07:06,566 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 11:07:06,566 INFO L748 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 121#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 128#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 125#L23 assume !(main_~q~0#1 < main_~p~0#1); 127#L26 [2022-11-16 11:07:06,566 INFO L750 eck$LassoCheckResult]: Loop: 127#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 122#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 123#L23 assume !(main_~q~0#1 < main_~p~0#1); 127#L26 [2022-11-16 11:07:06,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:06,567 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-16 11:07:06,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:06,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373599021] [2022-11-16 11:07:06,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:06,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:06,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:06,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:06,578 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 1 times [2022-11-16 11:07:06,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:06,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416399010] [2022-11-16 11:07:06,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:06,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:06,585 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:06,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:06,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:06,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722640, now seen corresponding path program 1 times [2022-11-16 11:07:06,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:06,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435535315] [2022-11-16 11:07:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:06,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:06,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:06,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:06,662 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:06,662 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:06,662 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:06,662 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:06,663 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:07:06,663 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:06,663 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:06,663 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:06,663 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2022-11-16 11:07:06,663 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:06,663 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:06,665 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:06,669 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:06,672 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:06,757 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:06,757 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:07:06,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:06,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:06,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:06,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:06,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:06,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-16 11:07:06,800 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:07:06,800 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: [] [2022-11-16 11:07:06,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:06,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:06,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:06,811 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:06,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:06,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:06,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-16 11:07:06,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:06,852 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:07:06,852 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: [] [2022-11-16 11:07:06,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:06,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:06,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:06,861 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:06,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-16 11:07:06,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:06,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:06,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:06,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:06,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:06,912 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:06,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:07:06,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:06,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-16 11:07:07,056 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:07:07,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-11-16 11:07:07,063 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:07,063 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:07,063 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:07,063 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:07,063 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:07:07,063 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:07,064 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:07,064 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:07,064 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration3_Loop [2022-11-16 11:07:07,064 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:07,064 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:07,066 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:07,083 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:07,107 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:07,195 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:07,196 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:07:07,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:07,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:07,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:07,208 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 [2022-11-16 11:07:07,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:07,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:07,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:07,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:07,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-16 11:07:07,224 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-16 11:07:07,225 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-16 11:07:07,236 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:07:07,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:07,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:07,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:07,246 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:07,255 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 [2022-11-16 11:07:07,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:07,268 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:07:07,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:07,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:07,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:07,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-16 11:07:07,270 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:07:07,271 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:07:07,281 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:07:07,285 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 11:07:07,285 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 11:07:07,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:07,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:07,291 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:07,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-16 11:07:07,295 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:07:07,295 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:07:07,295 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:07:07,295 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2022-11-16 11:07:07,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:07,306 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:07:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:07,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:07,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:07:07,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:07,413 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-16 11:07:07,414 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-11-16 11:07:07,450 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 17 states and 21 transitions. Complement of second has 7 states. [2022-11-16 11:07:07,450 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 [2022-11-16 11:07:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-11-16 11:07:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-16 11:07:07,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2022-11-16 11:07:07,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:07,454 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-16 11:07:07,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:07,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2022-11-16 11:07:07,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:07,456 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2022-11-16 11:07:07,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 11:07:07,459 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 18 transitions. [2022-11-16 11:07:07,459 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-16 11:07:07,459 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-11-16 11:07:07,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2022-11-16 11:07:07,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:07:07,459 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 18 transitions. [2022-11-16 11:07:07,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2022-11-16 11:07:07,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-11-16 11:07:07,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-11-16 11:07:07,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2022-11-16 11:07:07,464 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-11-16 11:07:07,464 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-11-16 11:07:07,464 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-16 11:07:07,464 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2022-11-16 11:07:07,466 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 11:07:07,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:07:07,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:07:07,467 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-16 11:07:07,467 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-16 11:07:07,468 INFO L748 eck$LassoCheckResult]: Stem: 191#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 192#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 201#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 196#L23 assume !(main_~q~0#1 < main_~p~0#1); 203#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 200#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 202#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 193#L26-2 [2022-11-16 11:07:07,468 INFO L750 eck$LassoCheckResult]: Loop: 193#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 194#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 193#L26-2 [2022-11-16 11:07:07,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:07,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722638, now seen corresponding path program 1 times [2022-11-16 11:07:07,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:07,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771394310] [2022-11-16 11:07:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:07,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:07,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:07,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 2 times [2022-11-16 11:07:07,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:07,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570031323] [2022-11-16 11:07:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:07,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:07,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:07,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:07,524 INFO L85 PathProgramCache]: Analyzing trace with hash 642700593, now seen corresponding path program 2 times [2022-11-16 11:07:07,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:07,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107724397] [2022-11-16 11:07:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:07,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:07,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:07,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:07,595 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:07,595 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:07,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:07,595 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:07,595 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:07:07,595 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:07,595 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:07,596 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:07,596 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2022-11-16 11:07:07,596 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:07,596 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:07,597 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:07,601 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:07,611 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:07,660 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:07,660 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:07:07,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:07,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:07,661 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:07,672 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:07,672 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:07,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-16 11:07:07,696 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:07:07,696 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: [] [2022-11-16 11:07:07,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:07,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:07,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:07,707 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:07,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:07,718 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:07,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-16 11:07:07,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:07,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:07,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:07,756 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:07,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:07:07,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:07,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-16 11:07:07,800 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:07:07,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:07,809 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:07,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:07,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:07,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:07,810 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:07:07,810 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:07,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:07,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:07,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration4_Loop [2022-11-16 11:07:07,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:07,810 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:07,811 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:07,825 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:07,829 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:07,885 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:07,885 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:07:07,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:07,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:07,886 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:07,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-16 11:07:07,897 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 [2022-11-16 11:07:07,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:07,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:07:07,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:07,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:07,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:07,919 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:07:07,919 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:07:07,937 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:07:07,943 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 11:07:07,943 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 11:07:07,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:07,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:07,950 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:07,953 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:07:07,953 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:07:07,953 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:07:07,953 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-11-16 11:07:07,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-16 11:07:07,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:07,965 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:07:07,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:08,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:08,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:08,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:07:08,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:08,060 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 [2022-11-16 11:07:08,060 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7 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) [2022-11-16 11:07:08,082 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 7. 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 28 states and 35 transitions. Complement of second has 5 states. [2022-11-16 11:07:08,082 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 [2022-11-16 11:07:08,083 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) [2022-11-16 11:07:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-11-16 11:07:08,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2022-11-16 11:07:08,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:08,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2022-11-16 11:07:08,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:08,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-16 11:07:08,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:08,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2022-11-16 11:07:08,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 11:07:08,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 24 states and 31 transitions. [2022-11-16 11:07:08,088 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-16 11:07:08,088 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-11-16 11:07:08,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2022-11-16 11:07:08,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:07:08,088 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-16 11:07:08,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2022-11-16 11:07:08,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-16 11:07:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 21 states have internal predecessors, (29), 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) [2022-11-16 11:07:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2022-11-16 11:07:08,092 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-11-16 11:07:08,092 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-11-16 11:07:08,092 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-16 11:07:08,092 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2022-11-16 11:07:08,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 11:07:08,093 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:07:08,093 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:07:08,094 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1] [2022-11-16 11:07:08,094 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 11:07:08,094 INFO L748 eck$LassoCheckResult]: Stem: 279#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 280#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 289#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 298#L23 assume !(main_~q~0#1 < main_~p~0#1); 296#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 295#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 290#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 281#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 283#L23 assume !(main_~q~0#1 < main_~p~0#1); 285#L26 [2022-11-16 11:07:08,094 INFO L750 eck$LassoCheckResult]: Loop: 285#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 293#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 294#L23 assume !(main_~q~0#1 < main_~p~0#1); 285#L26 [2022-11-16 11:07:08,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:08,095 INFO L85 PathProgramCache]: Analyzing trace with hash 642700595, now seen corresponding path program 3 times [2022-11-16 11:07:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:08,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940563226] [2022-11-16 11:07:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:08,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:08,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:08,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 2 times [2022-11-16 11:07:08,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:08,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530133194] [2022-11-16 11:07:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:08,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:08,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:08,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:08,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:08,123 INFO L85 PathProgramCache]: Analyzing trace with hash -270761307, now seen corresponding path program 4 times [2022-11-16 11:07:08,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:08,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887697702] [2022-11-16 11:07:08,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:08,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:08,133 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:08,140 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:08,194 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:08,194 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:08,194 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:08,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:08,195 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:07:08,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:08,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:08,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:08,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2022-11-16 11:07:08,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:08,195 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:08,197 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:08,200 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:08,203 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:08,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:08,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-11-16 11:07:08,338 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:08,338 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:07:08,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:08,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:08,340 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:08,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:08,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:08,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-16 11:07:08,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:07:08,367 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: [] [2022-11-16 11:07:08,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:08,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:08,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:08,371 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:08,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-16 11:07:08,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:08,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:08,397 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:07:08,397 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: [] [2022-11-16 11:07:08,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-11-16 11:07:08,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:08,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:08,401 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:08,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-16 11:07:08,406 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:08,406 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:08,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:08,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:08,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:08,444 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:08,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-16 11:07:08,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:07:08,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:08,605 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:07:08,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:08,609 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:08,609 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:08,609 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:08,609 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:08,609 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:07:08,609 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:08,609 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:08,609 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:08,609 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration5_Loop [2022-11-16 11:07:08,609 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:08,610 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:08,611 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:08,615 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:08,618 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:08,714 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:08,714 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:07:08,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:08,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:08,715 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:08,723 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 [2022-11-16 11:07:08,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-16 11:07:08,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:08,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:08,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:08,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:08,739 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-16 11:07:08,739 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-16 11:07:08,756 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:07:08,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:08,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:08,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:08,766 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:08,770 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 [2022-11-16 11:07:08,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:08,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:08,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:08,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:08,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-16 11:07:08,787 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-16 11:07:08,787 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-16 11:07:08,798 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:07:08,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:08,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:08,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:08,805 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:08,812 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 [2022-11-16 11:07:08,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:08,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:07:08,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:08,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:08,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:08,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-16 11:07:08,829 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:07:08,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:07:08,846 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:07:08,860 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 11:07:08,861 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 11:07:08,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:08,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:08,863 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:08,871 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:07:08,871 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:07:08,871 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:07:08,871 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2022-11-16 11:07:08,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-16 11:07:08,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:08,880 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:07:08,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:08,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:08,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:08,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:07:08,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:08,950 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-16 11:07:08,950 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:08,971 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 36 transitions. Complement of second has 7 states. [2022-11-16 11:07:08,972 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 [2022-11-16 11:07:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-16 11:07:08,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2022-11-16 11:07:08,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:08,973 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 11:07:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:08,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:08,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:09,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:07:09,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:09,032 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-16 11:07:09,033 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:09,056 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 35 transitions. Complement of second has 7 states. [2022-11-16 11:07:09,057 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 [2022-11-16 11:07:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2022-11-16 11:07:09,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 3 letters. [2022-11-16 11:07:09,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:09,058 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 11:07:09,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:09,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:09,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:09,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:07:09,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:09,118 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-16 11:07:09,118 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:09,140 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 43 transitions. Complement of second has 6 states. [2022-11-16 11:07:09,141 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 [2022-11-16 11:07:09,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-16 11:07:09,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2022-11-16 11:07:09,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:09,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 3 letters. [2022-11-16 11:07:09,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:09,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 6 letters. [2022-11-16 11:07:09,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:09,144 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2022-11-16 11:07:09,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-11-16 11:07:09,145 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 26 states and 34 transitions. [2022-11-16 11:07:09,146 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-11-16 11:07:09,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-11-16 11:07:09,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2022-11-16 11:07:09,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:07:09,146 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-11-16 11:07:09,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2022-11-16 11:07:09,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17. [2022-11-16 11:07:09,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 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) [2022-11-16 11:07:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-11-16 11:07:09,148 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-11-16 11:07:09,149 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-11-16 11:07:09,149 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-16 11:07:09,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2022-11-16 11:07:09,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-16 11:07:09,149 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:07:09,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:07:09,150 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2022-11-16 11:07:09,150 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2022-11-16 11:07:09,150 INFO L748 eck$LassoCheckResult]: Stem: 540#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 541#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 542#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 544#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 549#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 547#L23 assume !(main_~q~0#1 < main_~p~0#1); 548#L26 [2022-11-16 11:07:09,150 INFO L750 eck$LassoCheckResult]: Loop: 548#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 545#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 546#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 554#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 553#L23 assume !(main_~q~0#1 < main_~p~0#1); 548#L26 [2022-11-16 11:07:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-11-16 11:07:09,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:09,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021919976] [2022-11-16 11:07:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:09,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:09,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:09,161 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:09,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash 46517562, now seen corresponding path program 1 times [2022-11-16 11:07:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:09,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989385217] [2022-11-16 11:07:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:09,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:09,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:09,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:09,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:09,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1606994736, now seen corresponding path program 5 times [2022-11-16 11:07:09,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:09,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983026286] [2022-11-16 11:07:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:09,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:09,182 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:09,189 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:09,268 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:09,268 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:09,269 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:09,269 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:09,269 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:07:09,269 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:09,269 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:09,269 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:09,269 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2022-11-16 11:07:09,269 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:09,269 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:09,270 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:09,274 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:09,278 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:09,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:09,393 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:09,393 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:07:09,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:09,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:09,395 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:09,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:09,403 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:09,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-16 11:07:09,425 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:07:09,425 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:07:09,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:09,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:09,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:09,436 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:09,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:09,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:09,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-16 11:07:09,466 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:07:09,467 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:07:09,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:09,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:09,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:09,471 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:09,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-16 11:07:09,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:09,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:09,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:09,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:09,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:09,499 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:09,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-16 11:07:09,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:07:09,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:09,768 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:07:09,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:09,778 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:09,778 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:09,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:09,779 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:09,779 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:07:09,779 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:09,779 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:09,779 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:09,779 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration6_Loop [2022-11-16 11:07:09,779 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:09,779 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:09,781 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:09,787 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:09,793 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:09,910 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:09,910 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:07:09,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:09,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:09,915 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:09,919 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 [2022-11-16 11:07:09,933 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:09,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:09,933 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:09,933 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:09,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-16 11:07:09,936 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-16 11:07:09,936 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-16 11:07:09,951 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:07:09,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:09,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:09,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:09,965 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:09,972 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 [2022-11-16 11:07:09,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-16 11:07:09,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:09,987 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:09,987 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:09,987 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:09,989 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-16 11:07:09,989 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-16 11:07:10,006 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:07:10,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:10,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:10,017 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:10,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-16 11:07:10,022 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 [2022-11-16 11:07:10,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:10,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:07:10,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:10,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:10,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:10,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:07:10,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:07:10,050 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:07:10,055 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 11:07:10,056 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 11:07:10,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:10,057 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:10,064 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:07:10,064 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:07:10,065 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:07:10,065 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-11-16 11:07:10,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-16 11:07:10,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:10,075 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:07:10,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:10,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:10,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:10,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:07:10,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:10,190 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2022-11-16 11:07:10,190 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:10,249 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 62 transitions. Complement of second has 8 states. [2022-11-16 11:07:10,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-16 11:07:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:07:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2022-11-16 11:07:10,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 6 letters. Loop has 5 letters. [2022-11-16 11:07:10,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:10,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 11 letters. Loop has 5 letters. [2022-11-16 11:07:10,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:10,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 6 letters. Loop has 10 letters. [2022-11-16 11:07:10,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:10,262 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 62 transitions. [2022-11-16 11:07:10,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-16 11:07:10,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 38 transitions. [2022-11-16 11:07:10,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-16 11:07:10,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-16 11:07:10,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 38 transitions. [2022-11-16 11:07:10,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:07:10,270 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 38 transitions. [2022-11-16 11:07:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 38 transitions. [2022-11-16 11:07:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-11-16 11:07:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 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) [2022-11-16 11:07:10,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-11-16 11:07:10,273 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-11-16 11:07:10,273 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-11-16 11:07:10,273 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-16 11:07:10,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 32 transitions. [2022-11-16 11:07:10,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-16 11:07:10,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:07:10,274 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:07:10,274 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 1, 1, 1, 1] [2022-11-16 11:07:10,274 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-16 11:07:10,274 INFO L748 eck$LassoCheckResult]: Stem: 662#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 663#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 664#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 665#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 678#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 676#L23 assume !(main_~q~0#1 < main_~p~0#1); 677#L26 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1;main_~q~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 683#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 682#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 681#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 679#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 670#L26-2 [2022-11-16 11:07:10,274 INFO L750 eck$LassoCheckResult]: Loop: 670#L26-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 669#L23 assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1;main_~p~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 670#L26-2 [2022-11-16 11:07:10,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1606994734, now seen corresponding path program 6 times [2022-11-16 11:07:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:10,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698261451] [2022-11-16 11:07:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:10,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:10,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:10,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:10,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:10,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 3 times [2022-11-16 11:07:10,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:10,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437296182] [2022-11-16 11:07:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:10,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:10,336 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:10,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:10,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:10,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1866286831, now seen corresponding path program 7 times [2022-11-16 11:07:10,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:10,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704958019] [2022-11-16 11:07:10,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:10,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:10,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:07:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:07:10,366 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:07:10,410 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:10,410 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:10,410 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:10,410 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:10,411 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:07:10,411 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,411 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:10,411 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:10,411 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2022-11-16 11:07:10,411 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:10,411 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:10,414 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:10,418 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:10,421 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:10,482 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:10,482 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:07:10,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:10,484 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:10,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:10,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:10,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-16 11:07:10,520 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:07:10,520 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:07:10,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:10,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:10,528 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:10,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:10,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:10,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-16 11:07:10,557 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:07:10,558 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:07:10,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-11-16 11:07:10,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:10,562 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:10,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:07:10,567 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:10,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-16 11:07:10,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:10,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:10,595 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:10,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:07:10,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:07:10,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-16 11:07:10,647 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:07:10,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:10,657 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:07:10,657 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:07:10,658 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:07:10,658 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:07:10,658 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:07:10,658 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,658 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:07:10,658 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:07:10,658 INFO L133 ssoRankerPreferences]: Filename of dumped script: Piecewise.c_Iteration7_Loop [2022-11-16 11:07:10,658 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:07:10,658 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:07:10,660 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:10,664 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:10,668 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:07:10,728 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:07:10,728 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:07:10,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:10,730 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:10,736 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 [2022-11-16 11:07:10,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-16 11:07:10,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:10,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:10,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:10,750 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:10,752 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-16 11:07:10,752 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-16 11:07:10,763 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:07:10,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:10,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:10,769 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:10,775 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 [2022-11-16 11:07:10,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-16 11:07:10,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:10,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:10,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:10,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:10,793 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-16 11:07:10,793 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-16 11:07:10,804 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:07:10,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:10,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:10,809 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:10,815 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 [2022-11-16 11:07:10,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-16 11:07:10,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:07:10,830 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:07:10,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:07:10,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:07:10,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:07:10,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:07:10,832 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:07:10,850 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:07:10,853 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-16 11:07:10,853 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 11:07:10,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:07:10,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:10,855 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:07:10,859 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:07:10,859 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:07:10,859 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:07:10,859 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-11-16 11:07:10,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-16 11:07:10,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:10,867 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:07:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:10,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:10,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:10,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:07:10,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:10,959 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 [2022-11-16 11:07:10,960 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 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) [2022-11-16 11:07:10,985 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. 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 32 states and 40 transitions. Complement of second has 5 states. [2022-11-16 11:07:10,986 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 [2022-11-16 11:07:10,987 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) [2022-11-16 11:07:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-11-16 11:07:10,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2022-11-16 11:07:10,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:10,988 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 11:07:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:11,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:11,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:11,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:07:11,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:11,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:11,081 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-16 11:07:11,082 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 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) [2022-11-16 11:07:11,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-11-16 11:07:11,099 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. 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 32 states and 40 transitions. Complement of second has 5 states. [2022-11-16 11:07:11,100 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 [2022-11-16 11:07:11,101 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) [2022-11-16 11:07:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-11-16 11:07:11,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2022-11-16 11:07:11,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:11,102 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 11:07:11,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:11,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:07:11,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:11,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:07:11,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:07:11,168 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-16 11:07:11,168 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13 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) [2022-11-16 11:07:11,188 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 13. 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 36 states and 47 transitions. Complement of second has 4 states. [2022-11-16 11:07:11,189 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 [2022-11-16 11:07:11,189 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) [2022-11-16 11:07:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-11-16 11:07:11,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2022-11-16 11:07:11,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:11,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 2 letters. [2022-11-16 11:07:11,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:11,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 4 letters. [2022-11-16 11:07:11,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:07:11,194 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 47 transitions. [2022-11-16 11:07:11,195 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 11:07:11,196 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2022-11-16 11:07:11,196 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-16 11:07:11,196 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-16 11:07:11,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-16 11:07:11,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:07:11,197 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:07:11,197 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:07:11,197 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:07:11,197 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-16 11:07:11,198 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-16 11:07:11,198 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 11:07:11,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-16 11:07:11,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 11:07:11 BoogieIcfgContainer [2022-11-16 11:07:11,205 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 11:07:11,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:07:11,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:07:11,206 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:07:11,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:07:04" (3/4) ... [2022-11-16 11:07:11,209 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:07:11,209 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:07:11,210 INFO L158 Benchmark]: Toolchain (without parser) took 6908.47ms. Allocated memory was 96.5MB in the beginning and 146.8MB in the end (delta: 50.3MB). Free memory was 59.8MB in the beginning and 109.8MB in the end (delta: -50.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:07:11,210 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:07:11,211 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.78ms. Allocated memory is still 96.5MB. Free memory was 59.6MB in the beginning and 73.5MB in the end (delta: -13.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:07:11,211 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.87ms. Allocated memory is still 96.5MB. Free memory was 73.5MB in the beginning and 72.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:07:11,211 INFO L158 Benchmark]: Boogie Preprocessor took 18.55ms. Allocated memory is still 96.5MB. Free memory was 72.1MB in the beginning and 71.2MB in the end (delta: 960.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:07:11,212 INFO L158 Benchmark]: RCFGBuilder took 272.91ms. Allocated memory is still 96.5MB. Free memory was 70.9MB in the beginning and 62.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:07:11,212 INFO L158 Benchmark]: BuchiAutomizer took 6305.96ms. Allocated memory was 96.5MB in the beginning and 146.8MB in the end (delta: 50.3MB). Free memory was 62.6MB in the beginning and 110.8MB in the end (delta: -48.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:07:11,212 INFO L158 Benchmark]: Witness Printer took 3.33ms. Allocated memory is still 146.8MB. Free memory was 110.8MB in the beginning and 109.8MB in the end (delta: 993.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:07:11,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.78ms. Allocated memory is still 96.5MB. Free memory was 59.6MB in the beginning and 73.5MB in the end (delta: -13.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.87ms. Allocated memory is still 96.5MB. Free memory was 73.5MB in the beginning and 72.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.55ms. Allocated memory is still 96.5MB. Free memory was 72.1MB in the beginning and 71.2MB in the end (delta: 960.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 272.91ms. Allocated memory is still 96.5MB. Free memory was 70.9MB in the beginning and 62.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 6305.96ms. Allocated memory was 96.5MB in the beginning and 146.8MB in the end (delta: 50.3MB). Free memory was 62.6MB in the beginning and 110.8MB in the end (delta: -48.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Witness Printer took 3.33ms. Allocated memory is still 146.8MB. Free memory was 110.8MB in the beginning and 109.8MB in the end (delta: 993.2kB). 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 (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. One deterministic module has affine ranking function q and consists of 3 locations. One deterministic module has affine ranking function q and consists of 5 locations. One nondeterministic module has affine ranking function p and consists of 4 locations. One nondeterministic module has affine ranking function q and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.2s and 8 iterations. TraceHistogramMax:4. Analysis of lassos took 4.8s. Construction of modules took 0.1s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 6 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 [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 80 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 63 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax161 hnf100 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp89 dnf100 smp100 tf107 neg98 sie118 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-16 11:07:11,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b97f85e7-1d1a-42ed-922b-0eb136c5471d/bin/uautomizer-tPACEb0tL8/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 Result: TRUE