./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD --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 32bit --witnessprinter.graph.data.programhash 76982ccfa15d5420010caf48ff31900a394710bc42d46403e291e5b0b2cbfb5b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:53:01,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:53:01,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:53:01,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:53:01,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:53:01,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:53:01,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:53:01,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:53:01,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:53:01,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:53:01,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:53:01,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:53:01,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:53:01,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:53:01,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:53:01,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:53:01,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:53:01,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:53:01,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:53:01,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:53:01,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:53:01,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:53:01,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:53:01,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:53:01,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:53:01,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:53:01,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:53:01,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:53:01,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:53:01,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:53:01,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:53:01,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:53:01,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:53:01,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:53:01,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:53:01,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:53:01,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:53:01,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:53:01,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:53:01,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:53:01,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:53:01,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:53:01,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:53:01,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:53:01,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:53:01,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:53:01,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:53:01,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:53:01,681 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:53:01,681 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:53:01,682 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:53:01,682 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:53:01,683 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:53:01,684 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:53:01,684 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:53:01,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:53:01,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:53:01,685 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:53:01,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:53:01,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:53:01,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:53:01,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:53:01,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:53:01,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:53:01,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:53:01,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:53:01,687 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:53:01,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:53:01,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:53:01,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:53:01,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:53:01,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:53:01,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:53:01,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:53:01,692 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:53:01,692 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_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76982ccfa15d5420010caf48ff31900a394710bc42d46403e291e5b0b2cbfb5b [2021-10-28 23:53:02,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:53:02,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:53:02,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:53:02,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:53:02,074 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:53:02,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2021-10-28 23:53:02,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/data/377ecbb71/4a6c996287f2412e88f9a35e9178c7da/FLAGc49cb55c3 [2021-10-28 23:53:02,827 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:53:02,828 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2021-10-28 23:53:02,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/data/377ecbb71/4a6c996287f2412e88f9a35e9178c7da/FLAGc49cb55c3 [2021-10-28 23:53:03,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/data/377ecbb71/4a6c996287f2412e88f9a35e9178c7da [2021-10-28 23:53:03,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:53:03,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:53:03,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:53:03,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:53:03,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:53:03,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1880d16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03, skipping insertion in model container [2021-10-28 23:53:03,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:53:03,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:53:03,539 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2021-10-28 23:53:03,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:53:03,566 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:53:03,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2021-10-28 23:53:03,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:53:03,662 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:53:03,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03 WrapperNode [2021-10-28 23:53:03,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:53:03,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:53:03,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:53:03,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:53:03,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:53:03,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:53:03,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:53:03,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:53:03,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:53:03,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:53:03,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:53:03,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:53:03,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03" (1/1) ... [2021-10-28 23:53:03,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:53:03,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:53:03,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:53:03,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:53:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:53:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:53:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:53:03,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:53:04,527 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:53:04,527 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-28 23:53:04,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:53:04 BoogieIcfgContainer [2021-10-28 23:53:04,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:53:04,531 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:53:04,532 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:53:04,536 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:53:04,536 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:53:04,537 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:53:03" (1/3) ... [2021-10-28 23:53:04,544 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@643ab7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:53:04, skipping insertion in model container [2021-10-28 23:53:04,544 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:53:04,545 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:53:03" (2/3) ... [2021-10-28 23:53:04,545 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@643ab7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:53:04, skipping insertion in model container [2021-10-28 23:53:04,545 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:53:04,546 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:53:04" (3/3) ... [2021-10-28 23:53:04,547 INFO L389 chiAutomizerObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2021-10-28 23:53:04,620 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:53:04,620 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:53:04,621 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:53:04,621 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:53:04,621 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:53:04,622 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:53:04,622 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:53:04,622 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:53:04,652 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 78 states, 77 states have (on average 1.6623376623376624) internal successors, (128), 77 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:53:04,691 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2021-10-28 23:53:04,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:53:04,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:53:04,704 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:53:04,704 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:53:04,704 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:53:04,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 78 states, 77 states have (on average 1.6623376623376624) internal successors, (128), 77 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:53:04,727 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2021-10-28 23:53:04,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:53:04,728 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:53:04,730 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:53:04,730 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:53:04,741 INFO L791 eck$LassoCheckResult]: Stem: 56#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(47);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0; 38#L-1true havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~ret29, main_#t~ret30, main_#t~post31, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~alive1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~alive2~0 := main_#t~nondet23;havoc main_#t~nondet23;~id3~0 := main_#t~nondet24;havoc main_#t~nondet24;~st3~0 := main_#t~nondet25;havoc main_#t~nondet25;~send3~0 := main_#t~nondet26;havoc main_#t~nondet26;~mode3~0 := main_#t~nondet27;havoc main_#t~nondet27;~alive3~0 := main_#t~nondet28;havoc main_#t~nondet28;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 12#L159true assume !(0 == ~r1~0);init_~tmp~0 := 0; 37#L159-1true init_#res := init_~tmp~0; 22#L228true main_#t~ret29 := init_#res;main_~i2~0 := main_#t~ret29;havoc main_#t~ret29; 40#L275true assume 0 == main_~i2~0;assume false; 54#L275-2true ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 17#L283-2true [2021-10-28 23:53:04,742 INFO L793 eck$LassoCheckResult]: Loop: 17#L283-2true assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 76#L57true assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 6#L61true assume !(node1_~m1~0 != ~nomsg~0); 45#L61-1true ~mode1~0 := 0; 62#L57-2true havoc node2_#t~ite9, node2_#t~ite10, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 46#L92true assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 25#L95true assume !(node2_~m2~0 != ~nomsg~0); 32#L95-1true ~mode2~0 := 0; 72#L92-2true havoc node3_#t~ite11, node3_#t~ite12, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 5#L126true assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 51#L129true assume !(node3_~m3~0 != ~nomsg~0); 43#L129-1true ~mode3~0 := 0; 73#L126-2true ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 70#L236true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 74#L236-1true check_#res := check_~tmp~1; 75#L248true main_#t~ret30 := check_#res;main_~c1~0 := main_#t~ret30;havoc main_#t~ret30;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 14#L307true assume !(0 == assert_~arg % 256); 18#L302true main_#t~post31 := main_~i2~0;main_~i2~0 := 1 + main_#t~post31;havoc main_#t~post31; 17#L283-2true [2021-10-28 23:53:04,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:53:04,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1898425706, now seen corresponding path program 1 times [2021-10-28 23:53:04,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:53:04,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304170012] [2021-10-28 23:53:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:53:04,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:53:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:53:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:53:05,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:53:05,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304170012] [2021-10-28 23:53:05,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304170012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:53:05,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:53:05,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:53:05,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134371320] [2021-10-28 23:53:05,057 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:53:05,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:53:05,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1437480316, now seen corresponding path program 1 times [2021-10-28 23:53:05,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:53:05,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695171376] [2021-10-28 23:53:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:53:05,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:53:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:53:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:53:05,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:53:05,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695171376] [2021-10-28 23:53:05,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695171376] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:53:05,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:53:05,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:53:05,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44674568] [2021-10-28 23:53:05,280 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:53:05,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:53:05,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:53:05,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:53:05,306 INFO L87 Difference]: Start difference. First operand has 78 states, 77 states have (on average 1.6623376623376624) internal successors, (128), 77 states have internal predecessors, (128), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:53:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:53:05,321 INFO L93 Difference]: Finished difference Result 78 states and 125 transitions. [2021-10-28 23:53:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:53:05,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 125 transitions. [2021-10-28 23:53:05,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-10-28 23:53:05,333 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 73 states and 120 transitions. [2021-10-28 23:53:05,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2021-10-28 23:53:05,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2021-10-28 23:53:05,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 120 transitions. [2021-10-28 23:53:05,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:53:05,337 INFO L681 BuchiCegarLoop]: Abstraction has 73 states and 120 transitions. [2021-10-28 23:53:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states and 120 transitions. [2021-10-28 23:53:05,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-28 23:53:05,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.643835616438356) internal successors, (120), 72 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:53:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 120 transitions. [2021-10-28 23:53:05,375 INFO L704 BuchiCegarLoop]: Abstraction has 73 states and 120 transitions. [2021-10-28 23:53:05,375 INFO L587 BuchiCegarLoop]: Abstraction has 73 states and 120 transitions. [2021-10-28 23:53:05,375 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:53:05,375 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 120 transitions. [2021-10-28 23:53:05,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-10-28 23:53:05,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:53:05,378 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:53:05,379 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:53:05,379 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:53:05,380 INFO L791 eck$LassoCheckResult]: Stem: 232#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(47);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0; 215#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~ret29, main_#t~ret30, main_#t~post31, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~alive1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~alive2~0 := main_#t~nondet23;havoc main_#t~nondet23;~id3~0 := main_#t~nondet24;havoc main_#t~nondet24;~st3~0 := main_#t~nondet25;havoc main_#t~nondet25;~send3~0 := main_#t~nondet26;havoc main_#t~nondet26;~mode3~0 := main_#t~nondet27;havoc main_#t~nondet27;~alive3~0 := main_#t~nondet28;havoc main_#t~nondet28;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 187#L159 assume !(0 == ~r1~0);init_~tmp~0 := 0; 173#L159-1 init_#res := init_~tmp~0; 199#L228 main_#t~ret29 := init_#res;main_~i2~0 := main_#t~ret29;havoc main_#t~ret29; 200#L275 assume !(0 == main_~i2~0); 219#L275-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 195#L283-2 [2021-10-28 23:53:05,380 INFO L793 eck$LassoCheckResult]: Loop: 195#L283-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 196#L57 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 174#L61 assume !(node1_~m1~0 != ~nomsg~0); 176#L61-1 ~mode1~0 := 0; 227#L57-2 havoc node2_#t~ite9, node2_#t~ite10, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 228#L92 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 204#L95 assume !(node2_~m2~0 != ~nomsg~0); 184#L95-1 ~mode2~0 := 0; 211#L92-2 havoc node3_#t~ite11, node3_#t~ite12, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 169#L126 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 170#L129 assume !(node3_~m3~0 != ~nomsg~0); 221#L129-1 ~mode3~0 := 0; 222#L126-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 236#L236 assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 210#L236-1 check_#res := check_~tmp~1; 239#L248 main_#t~ret30 := check_#res;main_~c1~0 := main_#t~ret30;havoc main_#t~ret30;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 189#L307 assume !(0 == assert_~arg % 256); 190#L302 main_#t~post31 := main_~i2~0;main_~i2~0 := 1 + main_#t~post31;havoc main_#t~post31; 195#L283-2 [2021-10-28 23:53:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:53:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1898425768, now seen corresponding path program 1 times [2021-10-28 23:53:05,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:53:05,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559223744] [2021-10-28 23:53:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:53:05,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:53:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:53:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:53:05,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:53:05,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559223744] [2021-10-28 23:53:05,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559223744] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:53:05,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:53:05,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:53:05,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915706400] [2021-10-28 23:53:05,477 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:53:05,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:53:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1437480316, now seen corresponding path program 2 times [2021-10-28 23:53:05,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:53:05,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57013929] [2021-10-28 23:53:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:53:05,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:53:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:53:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:53:05,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:53:05,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57013929] [2021-10-28 23:53:05,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57013929] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:53:05,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:53:05,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:53:05,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668523419] [2021-10-28 23:53:05,601 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:53:05,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:53:05,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:53:05,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:53:05,603 INFO L87 Difference]: Start difference. First operand 73 states and 120 transitions. cyclomatic complexity: 48 Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:53:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:53:05,703 INFO L93 Difference]: Finished difference Result 126 states and 202 transitions. [2021-10-28 23:53:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:53:05,704 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 202 transitions. [2021-10-28 23:53:05,707 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-10-28 23:53:05,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 123 states and 183 transitions. [2021-10-28 23:53:05,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 123 [2021-10-28 23:53:05,711 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 123 [2021-10-28 23:53:05,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 183 transitions. [2021-10-28 23:53:05,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:53:05,713 INFO L681 BuchiCegarLoop]: Abstraction has 123 states and 183 transitions. [2021-10-28 23:53:05,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 183 transitions. [2021-10-28 23:53:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 73. [2021-10-28 23:53:05,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.4109589041095891) internal successors, (103), 72 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:53:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2021-10-28 23:53:05,725 INFO L704 BuchiCegarLoop]: Abstraction has 73 states and 103 transitions. [2021-10-28 23:53:05,725 INFO L587 BuchiCegarLoop]: Abstraction has 73 states and 103 transitions. [2021-10-28 23:53:05,727 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:53:05,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 103 transitions. [2021-10-28 23:53:05,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-10-28 23:53:05,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:53:05,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:53:05,731 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:53:05,734 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:53:05,734 INFO L791 eck$LassoCheckResult]: Stem: 446#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(47);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0; 429#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~ret29, main_#t~ret30, main_#t~post31, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~alive1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~alive2~0 := main_#t~nondet23;havoc main_#t~nondet23;~id3~0 := main_#t~nondet24;havoc main_#t~nondet24;~st3~0 := main_#t~nondet25;havoc main_#t~nondet25;~send3~0 := main_#t~nondet26;havoc main_#t~nondet26;~mode3~0 := main_#t~nondet27;havoc main_#t~nondet27;~alive3~0 := main_#t~nondet28;havoc main_#t~nondet28;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 401#L159 assume 0 == ~r1~0; 402#L160 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 >= 1; 407#L161 assume ~id1~0 >= 0; 408#L162 assume 0 == ~st1~0; 426#L163 assume ~send1~0 == ~id1~0; 411#L164 assume 0 == ~mode1~0 % 256; 405#L165 assume ~id2~0 >= 0; 406#L166 assume 0 == ~st2~0; 415#L167 assume ~send2~0 == ~id2~0; 395#L168 assume 0 == ~mode2~0 % 256; 396#L169 assume ~id3~0 >= 0; 449#L170 assume 0 == ~st3~0; 434#L171 assume ~send3~0 == ~id3~0; 430#L172 assume 0 == ~mode3~0 % 256; 431#L173 assume ~id1~0 != ~id2~0; 448#L174 assume ~id1~0 != ~id3~0; 386#L175 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 387#L159-1 init_#res := init_~tmp~0; 413#L228 main_#t~ret29 := init_#res;main_~i2~0 := main_#t~ret29;havoc main_#t~ret29; 414#L275 assume !(0 == main_~i2~0); 432#L275-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 409#L283-2 [2021-10-28 23:53:05,735 INFO L793 eck$LassoCheckResult]: Loop: 409#L283-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 410#L57 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 388#L61 assume !(node1_~m1~0 != ~nomsg~0); 390#L61-1 ~mode1~0 := 0; 439#L57-2 havoc node2_#t~ite9, node2_#t~ite10, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 440#L92 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 418#L95 assume !(node2_~m2~0 != ~nomsg~0); 398#L95-1 ~mode2~0 := 0; 425#L92-2 havoc node3_#t~ite11, node3_#t~ite12, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 383#L126 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 384#L129 assume !(node3_~m3~0 != ~nomsg~0); 435#L129-1 ~mode3~0 := 0; 436#L126-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 452#L236 assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 424#L236-1 check_#res := check_~tmp~1; 453#L248 main_#t~ret30 := check_#res;main_~c1~0 := main_#t~ret30;havoc main_#t~ret30;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 403#L307 assume !(0 == assert_~arg % 256); 404#L302 main_#t~post31 := main_~i2~0;main_~i2~0 := 1 + main_#t~post31;havoc main_#t~post31; 409#L283-2 [2021-10-28 23:53:05,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:53:05,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1524872798, now seen corresponding path program 1 times [2021-10-28 23:53:05,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:53:05,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507821530] [2021-10-28 23:53:05,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:53:05,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:53:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:53:05,774 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:53:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:53:05,862 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:53:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:53:05,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1437480316, now seen corresponding path program 3 times [2021-10-28 23:53:05,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:53:05,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745381327] [2021-10-28 23:53:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:53:05,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:53:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:53:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:53:06,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:53:06,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745381327] [2021-10-28 23:53:06,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745381327] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:53:06,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:53:06,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:53:06,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378285129] [2021-10-28 23:53:06,014 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:53:06,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:53:06,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:53:06,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:53:06,016 INFO L87 Difference]: Start difference. First operand 73 states and 103 transitions. cyclomatic complexity: 31 Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:53:06,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:53:06,075 INFO L93 Difference]: Finished difference Result 76 states and 105 transitions. [2021-10-28 23:53:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:53:06,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 105 transitions. [2021-10-28 23:53:06,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-10-28 23:53:06,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 73 states and 101 transitions. [2021-10-28 23:53:06,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2021-10-28 23:53:06,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2021-10-28 23:53:06,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 101 transitions. [2021-10-28 23:53:06,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:53:06,088 INFO L681 BuchiCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-10-28 23:53:06,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states and 101 transitions. [2021-10-28 23:53:06,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-28 23:53:06,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 72 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:53:06,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2021-10-28 23:53:06,103 INFO L704 BuchiCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-10-28 23:53:06,103 INFO L587 BuchiCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-10-28 23:53:06,104 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:53:06,104 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 101 transitions. [2021-10-28 23:53:06,139 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-10-28 23:53:06,139 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:53:06,139 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:53:06,141 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:53:06,141 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:53:06,142 INFO L791 eck$LassoCheckResult]: Stem: 607#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(47);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0; 590#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~ret29, main_#t~ret30, main_#t~post31, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~alive1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~alive2~0 := main_#t~nondet23;havoc main_#t~nondet23;~id3~0 := main_#t~nondet24;havoc main_#t~nondet24;~st3~0 := main_#t~nondet25;havoc main_#t~nondet25;~send3~0 := main_#t~nondet26;havoc main_#t~nondet26;~mode3~0 := main_#t~nondet27;havoc main_#t~nondet27;~alive3~0 := main_#t~nondet28;havoc main_#t~nondet28;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 562#L159 assume 0 == ~r1~0; 563#L160 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 >= 1; 568#L161 assume ~id1~0 >= 0; 569#L162 assume 0 == ~st1~0; 587#L163 assume ~send1~0 == ~id1~0; 573#L164 assume 0 == ~mode1~0 % 256; 566#L165 assume ~id2~0 >= 0; 567#L166 assume 0 == ~st2~0; 578#L167 assume ~send2~0 == ~id2~0; 556#L168 assume 0 == ~mode2~0 % 256; 557#L169 assume ~id3~0 >= 0; 610#L170 assume 0 == ~st3~0; 595#L171 assume ~send3~0 == ~id3~0; 591#L172 assume 0 == ~mode3~0 % 256; 592#L173 assume ~id1~0 != ~id2~0; 609#L174 assume ~id1~0 != ~id3~0; 547#L175 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 548#L159-1 init_#res := init_~tmp~0; 574#L228 main_#t~ret29 := init_#res;main_~i2~0 := main_#t~ret29;havoc main_#t~ret29; 575#L275 assume !(0 == main_~i2~0); 593#L275-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 570#L283-2 [2021-10-28 23:53:06,142 INFO L793 eck$LassoCheckResult]: Loop: 570#L283-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 571#L57 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 549#L61 assume !(node1_~m1~0 != ~nomsg~0); 551#L61-1 ~mode1~0 := 0; 602#L57-2 havoc node2_#t~ite9, node2_#t~ite10, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 603#L92 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 579#L95 assume !(node2_~m2~0 != ~nomsg~0); 559#L95-1 ~mode2~0 := 0; 586#L92-2 havoc node3_#t~ite11, node3_#t~ite12, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 544#L126 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 545#L129 assume !(node3_~m3~0 != ~nomsg~0); 596#L129-1 ~mode3~0 := 0; 597#L126-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 611#L236 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 588#L237 assume ~r1~0 < 3;check_~tmp~1 := 1; 585#L236-1 check_#res := check_~tmp~1; 614#L248 main_#t~ret30 := check_#res;main_~c1~0 := main_#t~ret30;havoc main_#t~ret30;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 564#L307 assume !(0 == assert_~arg % 256); 565#L302 main_#t~post31 := main_~i2~0;main_~i2~0 := 1 + main_#t~post31;havoc main_#t~post31; 570#L283-2 [2021-10-28 23:53:06,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:53:06,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1524872798, now seen corresponding path program 2 times [2021-10-28 23:53:06,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:53:06,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869614459] [2021-10-28 23:53:06,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:53:06,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:53:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:53:06,195 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:53:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:53:06,267 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:53:06,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:53:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1995544096, now seen corresponding path program 1 times [2021-10-28 23:53:06,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:53:06,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537587276] [2021-10-28 23:53:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:53:06,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:53:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:53:06,307 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:53:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:53:06,335 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:53:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:53:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash 964547683, now seen corresponding path program 1 times [2021-10-28 23:53:06,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:53:06,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574896501] [2021-10-28 23:53:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:53:06,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:53:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:53:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:53:06,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:53:06,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574896501] [2021-10-28 23:53:06,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574896501] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:53:06,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:53:06,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:53:06,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689575610] [2021-10-28 23:53:07,438 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:53:07,439 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:53:07,439 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:53:07,439 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:53:07,440 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:53:07,440 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:53:07,440 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:53:07,440 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:53:07,440 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-10-28 23:53:07,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:53:07,452 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:53:07,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:07,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,174 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:53:08,175 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:53:08,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:53:08,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:53:08,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:53:08,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:53:08,194 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:53:08,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:53:08,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:53:08,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:53:08,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:53:08,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:53:08,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:53:08,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:53:08,271 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:53:08,316 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:53:08,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:53:08,326 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:53:08,326 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:53:08,326 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:53:08,326 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:53:08,326 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:53:08,326 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:53:08,326 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:53:08,326 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:53:08,326 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-10-28 23:53:08,326 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:53:08,326 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:53:08,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:53:08,946 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:53:08,952 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:53:08,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:53:08,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:53:08,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:53:08,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:53:08,956 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:53:08,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:53:08,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:53:08,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:53:08,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:53:08,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:53:08,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:53:08,970 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:53:08,992 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:53:08,998 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:53:08,998 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:53:09,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:53:09,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:53:09,006 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:53:09,012 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:53:09,012 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:53:09,013 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:53:09,013 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 11 Supporting invariants [] [2021-10-28 23:53:09,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:53:09,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:53:09,055 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:53:09,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:53:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:53:09,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:53:09,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:53:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:53:09,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:53:09,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:53:09,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:53:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:53:09,627 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:53:09,628 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 101 transitions. cyclomatic complexity: 29 Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:53:09,705 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 101 transitions. cyclomatic complexity: 29. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 123 states and 180 transitions. Complement of second has 4 states. [2021-10-28 23:53:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:53:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:53:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2021-10-28 23:53:09,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 101 transitions. Stem has 23 letters. Loop has 19 letters. [2021-10-28 23:53:09,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:53:09,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 101 transitions. Stem has 42 letters. Loop has 19 letters. [2021-10-28 23:53:09,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:53:09,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 101 transitions. Stem has 23 letters. Loop has 38 letters. [2021-10-28 23:53:09,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:53:09,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 180 transitions. [2021-10-28 23:53:09,722 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:53:09,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 0 states and 0 transitions. [2021-10-28 23:53:09,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:53:09,722 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:53:09,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:53:09,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:53:09,724 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:53:09,724 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:53:09,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:53:09,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:53:09,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:53:09,733 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:53:09,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:53:09,733 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-28 23:53:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:53:09,734 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-28 23:53:09,734 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:53:09,734 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:53:09,734 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:53:09,734 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:53:09,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:53:09,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:53:09,735 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:53:09,735 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:53:09,735 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:53:09,735 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:53:09,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:53:09,735 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:53:09,735 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 23:53:09,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:53:09 BoogieIcfgContainer [2021-10-28 23:53:09,744 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:53:09,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:53:09,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:53:09,745 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:53:09,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:53:04" (3/4) ... [2021-10-28 23:53:09,749 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:53:09,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:53:09,751 INFO L168 Benchmark]: Toolchain (without parser) took 6631.21 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 66.4 MB in the beginning and 106.2 MB in the end (delta: -39.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:53:09,752 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 83.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:53:09,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.34 ms. Allocated memory is still 104.9 MB. Free memory was 66.2 MB in the beginning and 76.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:09,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.39 ms. Allocated memory is still 104.9 MB. Free memory was 76.9 MB in the beginning and 74.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:09,759 INFO L168 Benchmark]: Boogie Preprocessor took 58.37 ms. Allocated memory is still 104.9 MB. Free memory was 74.5 MB in the beginning and 72.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:09,760 INFO L168 Benchmark]: RCFGBuilder took 708.48 ms. Allocated memory is still 104.9 MB. Free memory was 72.9 MB in the beginning and 56.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:53:09,764 INFO L168 Benchmark]: BuchiAutomizer took 5212.55 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 56.2 MB in the beginning and 106.2 MB in the end (delta: -50.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:53:09,764 INFO L168 Benchmark]: Witness Printer took 4.59 ms. Allocated memory is still 144.7 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:53:09,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 83.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 539.34 ms. Allocated memory is still 104.9 MB. Free memory was 66.2 MB in the beginning and 76.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.39 ms. Allocated memory is still 104.9 MB. Free memory was 76.9 MB in the beginning and 74.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.37 ms. Allocated memory is still 104.9 MB. Free memory was 74.5 MB in the beginning and 72.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 708.48 ms. Allocated memory is still 104.9 MB. Free memory was 72.9 MB in the beginning and 56.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5212.55 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 56.2 MB in the beginning and 106.2 MB in the end (delta: -50.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.59 ms. Allocated memory is still 144.7 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i2 + 11 and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 3.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 50 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 73 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 441 SDtfs, 183 SDslu, 699 SDs, 0 SdLazy, 35 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI2 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital122 mio100 ax100 hnf100 lsp31 ukn100 mio100 lsp100 div168 bol100 ite100 ukn100 eq153 hnf75 smp100 dnf104 smp96 tf102 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 60ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 23:53:09,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d9af9f-0052-45c0-a4f1-aafb7c11077f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...