./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/xor-01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/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_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/xor-01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/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_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/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 6748276207b055f086b7e803489fe8020fc54faaccf8e7b513ddf6b7ff856d91 --- 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 11:38:25,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:38:25,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:38:25,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:38:25,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:38:25,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:38:25,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:38:25,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:38:25,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:38:25,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:38:25,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:38:25,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:38:25,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:38:25,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:38:25,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:38:25,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:38:25,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:38:25,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:38:25,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:38:25,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:38:25,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:38:25,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:38:25,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:38:25,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:38:25,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:38:25,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:38:25,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:38:25,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:38:25,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:38:25,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:38:25,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:38:25,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:38:25,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:38:25,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:38:25,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:38:25,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:38:25,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:38:25,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:38:25,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:38:25,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:38:25,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:38:25,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-16 11:38:25,767 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:38:25,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:38:25,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:38:25,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:38:25,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:38:25,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:38:25,772 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:38:25,772 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 11:38:25,773 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 11:38:25,773 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 11:38:25,774 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 11:38:25,774 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 11:38:25,775 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 11:38:25,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:38:25,775 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:38:25,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:38:25,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:38:25,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 11:38:25,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 11:38:25,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 11:38:25,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:38:25,777 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 11:38:25,777 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:38:25,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 11:38:25,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:38:25,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:38:25,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:38:25,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:38:25,781 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 11:38:25,781 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_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6748276207b055f086b7e803489fe8020fc54faaccf8e7b513ddf6b7ff856d91 [2022-11-16 11:38:26,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:38:26,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:38:26,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:38:26,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:38:26,145 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:38:26,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/termination-bwb/xor-01.c [2022-11-16 11:38:26,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/data/0f0dcf066/9b187c345b3545d7b988ef105f89ef61/FLAGa8ec42a97 [2022-11-16 11:38:26,750 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:38:26,750 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/sv-benchmarks/c/termination-bwb/xor-01.c [2022-11-16 11:38:26,757 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/data/0f0dcf066/9b187c345b3545d7b988ef105f89ef61/FLAGa8ec42a97 [2022-11-16 11:38:27,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/data/0f0dcf066/9b187c345b3545d7b988ef105f89ef61 [2022-11-16 11:38:27,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:38:27,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:38:27,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:38:27,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:38:27,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:38:27,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31bca710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27, skipping insertion in model container [2022-11-16 11:38:27,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:38:27,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:38:27,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:38:27,371 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:38:27,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:38:27,404 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:38:27,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27 WrapperNode [2022-11-16 11:38:27,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:38:27,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:38:27,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:38:27,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:38:27,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,444 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-11-16 11:38:27,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:38:27,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:38:27,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:38:27,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:38:27,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,469 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:38:27,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:38:27,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:38:27,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:38:27,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (1/1) ... [2022-11-16 11:38:27,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:27,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:27,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:27,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 11:38:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:38:27,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:38:27,615 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:38:27,619 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:38:27,737 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:38:27,749 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:38:27,750 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:38:27,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:38:27 BoogieIcfgContainer [2022-11-16 11:38:27,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:38:27,755 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 11:38:27,755 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 11:38:27,759 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 11:38:27,760 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:38:27,760 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 11:38:27" (1/3) ... [2022-11-16 11:38:27,762 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ca0c219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:38:27, skipping insertion in model container [2022-11-16 11:38:27,762 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:38:27,762 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:38:27" (2/3) ... [2022-11-16 11:38:27,763 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ca0c219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:38:27, skipping insertion in model container [2022-11-16 11:38:27,763 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:38:27,763 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:38:27" (3/3) ... [2022-11-16 11:38:27,765 INFO L332 chiAutomizerObserver]: Analyzing ICFG xor-01.c [2022-11-16 11:38:27,839 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 11:38:27,839 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 11:38:27,839 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 11:38:27,839 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 11:38:27,839 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 11:38:27,840 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 11:38:27,840 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 11:38:27,840 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 11:38:27,848 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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 11:38:27,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-16 11:38:27,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:38:27,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:38:27,884 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:38:27,885 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-16 11:38:27,885 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 11:38:27,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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 11:38:27,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-16 11:38:27,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:38:27,888 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:38:27,888 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:38:27,888 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-16 11:38:27,897 INFO L748 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#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_~a~0#1, main_~b~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := 0; 6#L18-2true [2022-11-16 11:38:27,897 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 > 0); 4#L18true assume !(main_~a~0#1 >= 0);main_~x~0#1 := main_~x~0#1 - 1; 6#L18-2true [2022-11-16 11:38:27,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-16 11:38:27,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:27,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700422989] [2022-11-16 11:38:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:27,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:28,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:38:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:28,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:38:28,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:28,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1335, now seen corresponding path program 1 times [2022-11-16 11:38:28,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:28,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436354356] [2022-11-16 11:38:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:28,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:28,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:38:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:28,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:38:28,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:28,060 INFO L85 PathProgramCache]: Analyzing trace with hash 925817, now seen corresponding path program 1 times [2022-11-16 11:38:28,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:28,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494872210] [2022-11-16 11:38:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:28,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:28,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:38:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:28,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:38:28,144 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:38:28,145 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:38:28,145 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:38:28,145 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:38:28,146 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:38:28,146 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:28,146 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:38:28,146 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:38:28,147 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration1_Loop [2022-11-16 11:38:28,147 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:38:28,147 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:38:28,165 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 11:38:28,194 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 11:38:28,241 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:38:28,242 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:38:28,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:28,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:28,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:28,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-16 11:38:28,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:38:28,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:38:28,361 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:38:28,361 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~a~0#1=-1} Honda state: {ULTIMATE.start_main_~a~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:38:28,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:28,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:28,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:28,375 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:28,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-16 11:38:28,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:38:28,383 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:38:28,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:28,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:28,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:28,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:28,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:38:28,447 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:38:28,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-16 11:38:28,492 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:38:28,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:28,507 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:38:28,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:38:28,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:38:28,508 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:38:28,508 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:38:28,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:28,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:38:28,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:38:28,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration1_Loop [2022-11-16 11:38:28,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:38:28,508 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:38:28,510 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 11:38:28,515 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 11:38:28,572 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:38:28,577 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:38:28,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:28,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:28,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:28,620 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 11:38:28,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-16 11:38:28,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:38:28,642 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:38:28,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:38:28,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:38:28,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:38:28,645 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:38:28,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:38:28,659 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:38:28,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-11-16 11:38:28,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:28,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:28,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:28,675 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 11:38:28,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:38:28,688 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:38:28,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:38:28,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:38:28,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:38:28,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:38:28,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:38:28,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-16 11:38:28,712 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:38:28,718 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 11:38:28,719 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 11:38:28,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:28,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:28,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:28,741 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:38:28,741 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:38:28,741 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:38:28,742 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-16 11:38:28,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-16 11:38:28,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-11-16 11:38:28,754 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:38:28,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:28,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:38:28,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:28,824 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:38:28,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:28,859 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 11:38:28,898 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 11:38:28,900 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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) 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 11:38:28,961 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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). 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 55 transitions. Complement of second has 8 states. [2022-11-16 11:38:28,963 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 11:38:28,971 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 11:38:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-11-16 11:38:28,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-16 11:38:28,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:38:28,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-16 11:38:28,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:38:28,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-16 11:38:28,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:38:28,978 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 55 transitions. [2022-11-16 11:38:28,984 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-16 11:38:28,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 14 states and 20 transitions. [2022-11-16 11:38:28,991 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-11-16 11:38:28,992 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-11-16 11:38:28,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-11-16 11:38:28,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:38:28,994 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-11-16 11:38:29,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-11-16 11:38:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-11-16 11:38:29,016 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 11:38:29,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-11-16 11:38:29,018 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-16 11:38:29,018 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-16 11:38:29,019 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-16 11:38:29,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-11-16 11:38:29,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-16 11:38:29,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:38:29,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:38:29,020 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-16 11:38:29,020 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-16 11:38:29,021 INFO L748 eck$LassoCheckResult]: Stem: 93#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 94#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_~a~0#1, main_~b~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := 0; 100#L18-2 assume !!(main_~x~0#1 > 0); 89#L18 assume main_~a~0#1 >= 0; 90#L20 main_~a~0#1 := 1; 98#L20-6 [2022-11-16 11:38:29,021 INFO L750 eck$LassoCheckResult]: Loop: 98#L20-6 main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 95#L18-2 assume !!(main_~x~0#1 > 0); 96#L18 assume main_~a~0#1 >= 0; 101#L20 main_~a~0#1 := 1; 98#L20-6 [2022-11-16 11:38:29,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:29,022 INFO L85 PathProgramCache]: Analyzing trace with hash 28699755, now seen corresponding path program 1 times [2022-11-16 11:38:29,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:29,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594322267] [2022-11-16 11:38:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:29,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:29,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:38:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:29,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:38:29,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:29,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1858064, now seen corresponding path program 1 times [2022-11-16 11:38:29,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:29,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391871496] [2022-11-16 11:38:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:29,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:29,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:38:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:29,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:38:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash 584188282, now seen corresponding path program 1 times [2022-11-16 11:38:29,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:29,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656478673] [2022-11-16 11:38:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:29,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:29,058 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:38:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:29,065 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:38:29,096 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:38:29,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:38:29,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:38:29,096 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:38:29,097 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:38:29,097 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:29,097 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:38:29,097 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:38:29,097 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration2_Loop [2022-11-16 11:38:29,097 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:38:29,098 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:38:29,099 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 11:38:29,140 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:38:29,140 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:38:29,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:29,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:29,142 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:29,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:38:29,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:38:29,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-16 11:38:29,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:29,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:29,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:29,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:29,198 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:38:29,198 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:38:29,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-16 11:38:29,311 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:38:29,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:29,314 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:38:29,315 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:38:29,315 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:38:29,315 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:38:29,315 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:38:29,315 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:29,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:38:29,315 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:38:29,316 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration2_Loop [2022-11-16 11:38:29,316 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:38:29,316 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:38:29,317 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 11:38:29,359 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:38:29,360 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:38:29,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:29,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:29,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:29,397 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 11:38:29,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:38:29,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:38:29,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:38:29,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:38:29,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:38:29,412 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:38:29,412 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:38:29,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-16 11:38:29,425 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:38:29,431 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 11:38:29,431 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 11:38:29,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:29,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:29,440 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:29,447 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:38:29,447 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:38:29,448 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:38:29,448 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~a~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~a~0#1 Supporting invariants [] [2022-11-16 11:38:29,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-16 11:38:29,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-16 11:38:29,459 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:38:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:29,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:38:29,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:29,503 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:38:29,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:29,582 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 11:38:29,583 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 11:38:29,583 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 11:38:29,626 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 22 states and 32 transitions. Complement of second has 9 states. [2022-11-16 11:38:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-16 11:38:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 11:38:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 22 transitions. [2022-11-16 11:38:29,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 5 letters. Loop has 4 letters. [2022-11-16 11:38:29,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:38:29,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 9 letters. Loop has 4 letters. [2022-11-16 11:38:29,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:38:29,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 5 letters. Loop has 8 letters. [2022-11-16 11:38:29,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:38:29,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 32 transitions. [2022-11-16 11:38:29,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-16 11:38:29,632 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 20 transitions. [2022-11-16 11:38:29,632 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-16 11:38:29,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-11-16 11:38:29,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2022-11-16 11:38:29,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:38:29,633 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2022-11-16 11:38:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2022-11-16 11:38:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-11-16 11:38:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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 11:38:29,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2022-11-16 11:38:29,636 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-11-16 11:38:29,636 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-11-16 11:38:29,636 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-16 11:38:29,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2022-11-16 11:38:29,637 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-16 11:38:29,637 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:38:29,637 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:38:29,638 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:38:29,638 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-16 11:38:29,638 INFO L748 eck$LassoCheckResult]: Stem: 183#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 184#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_~a~0#1, main_~b~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := 0; 186#L18-2 assume !!(main_~x~0#1 > 0); 185#L18 assume main_~a~0#1 >= 0; 187#L20 main_~a~0#1 := 1; 188#L20-6 main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 180#L18-2 [2022-11-16 11:38:29,638 INFO L750 eck$LassoCheckResult]: Loop: 180#L18-2 assume !!(main_~x~0#1 > 0); 179#L18 assume !(main_~a~0#1 >= 0);main_~x~0#1 := main_~x~0#1 - 1; 180#L18-2 [2022-11-16 11:38:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash 889692436, now seen corresponding path program 2 times [2022-11-16 11:38:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:29,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967350566] [2022-11-16 11:38:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:29,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:29,645 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:38:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:29,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:38:29,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1335, now seen corresponding path program 2 times [2022-11-16 11:38:29,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:29,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993872810] [2022-11-16 11:38:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:29,655 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:38:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:38:29,659 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:38:29,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:29,660 INFO L85 PathProgramCache]: Analyzing trace with hash 295939466, now seen corresponding path program 1 times [2022-11-16 11:38:29,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:29,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910353781] [2022-11-16 11:38:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:29,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:38:29,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:29,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910353781] [2022-11-16 11:38:29,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910353781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:29,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:29,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:38:29,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712315294] [2022-11-16 11:38:29,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:29,752 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:38:29,752 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:38:29,752 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:38:29,752 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:38:29,752 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:38:29,752 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:29,752 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:38:29,753 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:38:29,753 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration3_Loop [2022-11-16 11:38:29,753 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:38:29,753 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:38:29,754 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 11:38:29,777 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 11:38:29,808 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:38:29,809 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:38:29,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:29,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:29,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-11-16 11:38:29,854 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:29,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-11-16 11:38:29,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-16 11:38:29,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:38:29,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:38:29,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:29,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:29,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:29,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:29,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:38:29,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:38:30,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-16 11:38:30,036 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:38:30,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:30,046 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:38:30,046 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:38:30,046 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:38:30,046 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:38:30,046 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:38:30,047 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:30,047 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:38:30,047 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:38:30,047 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration3_Loop [2022-11-16 11:38:30,047 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:38:30,047 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:38:30,048 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 11:38:30,056 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 11:38:30,080 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:38:30,080 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:38:30,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:30,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:30,082 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:30,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-16 11:38:30,090 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 11:38:30,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:38:30,103 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:38:30,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:38:30,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:38:30,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:38:30,105 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:38:30,105 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:38:30,116 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:38:30,121 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 11:38:30,121 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 11:38:30,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:38:30,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:30,123 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:38:30,129 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:38:30,129 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:38:30,129 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:38:30,129 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-16 11:38:30,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-16 11:38:30,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-11-16 11:38:30,137 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:38:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:30,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:38:30,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:30,197 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:38:30,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:30,214 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 11:38:30,215 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 11:38:30,215 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 19 transitions. cyclomatic complexity: 8 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 11:38:30,244 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 19 transitions. cyclomatic complexity: 8. 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 25 states and 33 transitions. Complement of second has 5 states. [2022-11-16 11:38:30,245 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 11:38:30,246 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 11:38:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2022-11-16 11:38:30,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-16 11:38:30,246 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:38:30,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2022-11-16 11:38:30,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:38:30,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-16 11:38:30,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:38:30,247 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 33 transitions. [2022-11-16 11:38:30,248 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-16 11:38:30,249 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 25 transitions. [2022-11-16 11:38:30,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-16 11:38:30,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-16 11:38:30,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2022-11-16 11:38:30,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:38:30,249 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-16 11:38:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2022-11-16 11:38:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-11-16 11:38:30,256 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 11:38:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-11-16 11:38:30,257 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-11-16 11:38:30,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:30,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:38:30,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:38:30,263 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 2 states have (on average 4.0) 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 11:38:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:30,282 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-11-16 11:38:30,282 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2022-11-16 11:38:30,285 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 11:38:30,286 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2022-11-16 11:38:30,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-16 11:38:30,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-16 11:38:30,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-16 11:38:30,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:38:30,286 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:38:30,286 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:38:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:38:30,288 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:38:30,288 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-16 11:38:30,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-16 11:38:30,289 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 11:38:30,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-16 11:38:30,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 11:38:30 BoogieIcfgContainer [2022-11-16 11:38:30,301 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 11:38:30,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:38:30,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:38:30,306 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:38:30,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:38:27" (3/4) ... [2022-11-16 11:38:30,311 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:38:30,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:38:30,313 INFO L158 Benchmark]: Toolchain (without parser) took 3172.58ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 65.6MB in the beginning and 88.3MB in the end (delta: -22.7MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2022-11-16 11:38:30,326 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 98.6MB. Free memory was 71.9MB in the beginning and 71.9MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:38:30,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.19ms. Allocated memory is still 98.6MB. Free memory was 65.3MB in the beginning and 77.0MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:38:30,329 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.77ms. Allocated memory is still 98.6MB. Free memory was 77.0MB in the beginning and 75.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:38:30,329 INFO L158 Benchmark]: Boogie Preprocessor took 25.41ms. Allocated memory is still 98.6MB. Free memory was 75.7MB in the beginning and 74.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:38:30,330 INFO L158 Benchmark]: RCFGBuilder took 280.87ms. Allocated memory is still 98.6MB. Free memory was 74.5MB in the beginning and 66.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:38:30,333 INFO L158 Benchmark]: BuchiAutomizer took 2546.90ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 66.2MB in the beginning and 88.8MB in the end (delta: -22.6MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-11-16 11:38:30,334 INFO L158 Benchmark]: Witness Printer took 7.43ms. Allocated memory is still 125.8MB. Free memory was 88.8MB in the beginning and 88.3MB in the end (delta: 520.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:38:30,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 98.6MB. Free memory was 71.9MB in the beginning and 71.9MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.19ms. Allocated memory is still 98.6MB. Free memory was 65.3MB in the beginning and 77.0MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.77ms. Allocated memory is still 98.6MB. Free memory was 77.0MB in the beginning and 75.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.41ms. Allocated memory is still 98.6MB. Free memory was 75.7MB in the beginning and 74.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 280.87ms. Allocated memory is still 98.6MB. Free memory was 74.5MB in the beginning and 66.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2546.90ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 66.2MB in the beginning and 88.8MB in the end (delta: -22.6MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Witness Printer took 7.43ms. Allocated memory is still 125.8MB. Free memory was 88.8MB in the beginning and 88.3MB in the end (delta: 520.1kB). 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 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x + -1 * a and consists of 6 locations. One deterministic module has affine ranking function x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 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 [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 32 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp80 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 80ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s 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 11:38:30,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-11-16 11:38:30,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08eb2dec-f7ae-4518-8a61-c1a64a5aa763/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