./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.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_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/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_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/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_6b2797e2-8160-4894-bf9a-162d298a65db/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 a7eb970df9460734baa401f9be0d88efb243a90e1dffe6744cd9f9a47afa0217 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 22:58:06,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:58:06,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:58:06,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:58:06,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:58:06,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:58:06,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:58:06,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:58:06,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:58:06,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:58:06,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:58:06,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:58:06,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:58:06,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:58:06,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:58:06,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:58:06,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:58:06,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:58:06,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:58:06,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:58:06,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:58:06,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:58:06,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:58:06,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:58:06,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:58:06,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:58:06,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:58:06,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:58:06,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:58:06,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:58:06,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:58:06,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:58:06,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:58:06,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:58:06,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:58:06,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:58:06,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:58:06,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:58:06,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:58:06,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:58:06,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:58:06,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 22:58:06,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:58:06,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:58:06,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:58:06,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:58:06,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:58:06,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:58:06,585 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:58:06,586 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 22:58:06,586 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 22:58:06,586 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 22:58:06,587 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 22:58:06,587 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 22:58:06,587 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 22:58:06,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:58:06,588 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:58:06,588 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:58:06,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:58:06,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:58:06,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:58:06,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 22:58:06,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 22:58:06,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 22:58:06,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:58:06,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:58:06,590 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 22:58:06,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:58:06,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 22:58:06,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:58:06,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:58:06,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:58:06,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:58:06,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:58:06,594 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 22:58:06,594 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_6b2797e2-8160-4894-bf9a-162d298a65db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7eb970df9460734baa401f9be0d88efb243a90e1dffe6744cd9f9a47afa0217 [2021-10-28 22:58:06,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:58:06,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:58:06,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:58:06,978 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:58:06,979 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:58:06,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2021-10-28 22:58:07,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/data/578a0bb0f/e5f2f951d6c742baa1e6d1fa6f50a4e3/FLAG66f069533 [2021-10-28 22:58:07,798 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:58:07,799 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2021-10-28 22:58:07,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/data/578a0bb0f/e5f2f951d6c742baa1e6d1fa6f50a4e3/FLAG66f069533 [2021-10-28 22:58:08,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/data/578a0bb0f/e5f2f951d6c742baa1e6d1fa6f50a4e3 [2021-10-28 22:58:08,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:58:08,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:58:08,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:58:08,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:58:08,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:58:08,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6316bc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08, skipping insertion in model container [2021-10-28 22:58:08,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:58:08,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:58:08,420 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_6b2797e2-8160-4894-bf9a-162d298a65db/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2021-10-28 22:58:08,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:58:08,433 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:58:08,485 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_6b2797e2-8160-4894-bf9a-162d298a65db/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2021-10-28 22:58:08,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:58:08,521 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:58:08,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08 WrapperNode [2021-10-28 22:58:08,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:58:08,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:58:08,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:58:08,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:58:08,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:58:08,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:58:08,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:58:08,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:58:08,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:58:08,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:58:08,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:58:08,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:58:08,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08" (1/1) ... [2021-10-28 22:58:08,697 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:08,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:08,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:08,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 22:58:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:58:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:58:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:58:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:58:09,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:58:09,272 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-28 22:58:09,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:09 BoogieIcfgContainer [2021-10-28 22:58:09,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:58:09,276 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 22:58:09,276 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 22:58:09,281 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 22:58:09,282 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:58:09,282 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 10:58:08" (1/3) ... [2021-10-28 22:58:09,284 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b9b8774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:58:09, skipping insertion in model container [2021-10-28 22:58:09,285 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:58:09,285 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:58:08" (2/3) ... [2021-10-28 22:58:09,285 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b9b8774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:58:09, skipping insertion in model container [2021-10-28 22:58:09,286 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:58:09,286 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:09" (3/3) ... [2021-10-28 22:58:09,288 INFO L389 chiAutomizerObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2021-10-28 22:58:09,359 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 22:58:09,360 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 22:58:09,360 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 22:58:09,360 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 22:58:09,360 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 22:58:09,361 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 22:58:09,361 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 22:58:09,361 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 22:58:09,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 75 states, 74 states have (on average 1.662162162162162) internal successors, (123), 74 states have internal predecessors, (123), 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 22:58:09,411 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 48 [2021-10-28 22:58:09,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:58:09,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:58:09,421 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:09,422 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 22:58:09,422 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 22:58:09,423 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 75 states, 74 states have (on average 1.662162162162162) internal successors, (123), 74 states have internal predecessors, (123), 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 22:58:09,430 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 48 [2021-10-28 22:58:09,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:58:09,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:58:09,432 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:09,432 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 22:58:09,441 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(49);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; 40#L-1true havoc main_#res;havoc main_#t~nondet12, 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~ret28, main_#t~ret29, main_#t~post30, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet12;havoc main_#t~nondet12;~id1~0 := main_#t~nondet13;havoc main_#t~nondet13;~st1~0 := main_#t~nondet14;havoc main_#t~nondet14;~send1~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode1~0 := main_#t~nondet16;havoc main_#t~nondet16;~alive1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~alive2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~alive3~0 := main_#t~nondet27;havoc main_#t~nondet27;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 65#L156true assume !(0 == ~r1~0);init_~tmp~0 := 0; 29#L156-1true init_#res := init_~tmp~0; 38#L225true main_#t~ret28 := init_#res;main_~i2~0 := main_#t~ret28;havoc main_#t~ret28; 45#L272true assume 0 == main_~i2~0;assume false; 22#L272-2true ~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; 39#L280-2true [2021-10-28 22:58:09,443 INFO L793 eck$LassoCheckResult]: Loop: 39#L280-2true assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 73#L57true assume !(0 != ~mode1~0 % 256); 67#L75true assume !(0 != ~alive1~0 % 256); 52#L75-2true ~mode1~0 := 1; 61#L57-2true havoc node2_#t~ite8, node2_#t~ite9, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 8#L89true assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 47#L92true assume !(node2_~m2~0 != ~nomsg~0); 36#L92-1true ~mode2~0 := 0; 20#L89-2true havoc node3_#t~ite10, node3_#t~ite11, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 24#L123true assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 5#L126true assume !(node3_~m3~0 != ~nomsg~0); 55#L126-1true ~mode3~0 := 0; 48#L123-2true ~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; 71#L233true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 72#L233-1true check_#res := check_~tmp~1; 27#L245true main_#t~ret29 := check_#res;main_~c1~0 := main_#t~ret29;havoc main_#t~ret29;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 28#L304true assume !(0 == assert_~arg % 256); 37#L299true main_#t~post30 := main_~i2~0;main_~i2~0 := 1 + main_#t~post30;havoc main_#t~post30; 39#L280-2true [2021-10-28 22:58:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1898425706, now seen corresponding path program 1 times [2021-10-28 22:58:09,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:09,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283321392] [2021-10-28 22:58:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:09,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:09,748 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 22:58:09,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:09,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283321392] [2021-10-28 22:58:09,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283321392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:09,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:09,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:58:09,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622800440] [2021-10-28 22:58:09,759 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:58:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1582780898, now seen corresponding path program 1 times [2021-10-28 22:58:09,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:09,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882110258] [2021-10-28 22:58:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:09,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:09,971 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 22:58:09,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:09,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882110258] [2021-10-28 22:58:09,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882110258] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:09,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:09,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:58:09,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583301437] [2021-10-28 22:58:09,975 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:58:09,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 22:58:09,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 22:58:10,000 INFO L87 Difference]: Start difference. First operand has 75 states, 74 states have (on average 1.662162162162162) internal successors, (123), 74 states have internal predecessors, (123), 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 22:58:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:10,024 INFO L93 Difference]: Finished difference Result 75 states and 120 transitions. [2021-10-28 22:58:10,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 22:58:10,028 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 120 transitions. [2021-10-28 22:58:10,043 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 22:58:10,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 70 states and 115 transitions. [2021-10-28 22:58:10,056 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2021-10-28 22:58:10,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2021-10-28 22:58:10,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 115 transitions. [2021-10-28 22:58:10,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:58:10,059 INFO L681 BuchiCegarLoop]: Abstraction has 70 states and 115 transitions. [2021-10-28 22:58:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states and 115 transitions. [2021-10-28 22:58:10,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-28 22:58:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 1.6428571428571428) internal successors, (115), 69 states have internal predecessors, (115), 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 22:58:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 115 transitions. [2021-10-28 22:58:10,108 INFO L704 BuchiCegarLoop]: Abstraction has 70 states and 115 transitions. [2021-10-28 22:58:10,109 INFO L587 BuchiCegarLoop]: Abstraction has 70 states and 115 transitions. [2021-10-28 22:58:10,109 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 22:58:10,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 115 transitions. [2021-10-28 22:58:10,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 22:58:10,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:58:10,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:58:10,121 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:10,122 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 22:58:10,122 INFO L791 eck$LassoCheckResult]: Stem: 224#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(49);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; 211#L-1 havoc main_#res;havoc main_#t~nondet12, 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~ret28, main_#t~ret29, main_#t~post30, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet12;havoc main_#t~nondet12;~id1~0 := main_#t~nondet13;havoc main_#t~nondet13;~st1~0 := main_#t~nondet14;havoc main_#t~nondet14;~send1~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode1~0 := main_#t~nondet16;havoc main_#t~nondet16;~alive1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~alive2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~alive3~0 := main_#t~nondet27;havoc main_#t~nondet27;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 212#L156 assume !(0 == ~r1~0);init_~tmp~0 := 0; 180#L156-1 init_#res := init_~tmp~0; 205#L225 main_#t~ret28 := init_#res;main_~i2~0 := main_#t~ret28;havoc main_#t~ret28; 209#L272 assume !(0 == main_~i2~0); 197#L272-2 ~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; 198#L280-2 [2021-10-28 22:58:10,122 INFO L793 eck$LassoCheckResult]: Loop: 198#L280-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 210#L57 assume !(0 != ~mode1~0 % 256); 229#L75 assume !(0 != ~alive1~0 % 256); 222#L75-2 ~mode1~0 := 1; 219#L57-2 havoc node2_#t~ite8, node2_#t~ite9, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 171#L89 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 173#L92 assume !(node2_~m2~0 != ~nomsg~0); 185#L92-1 ~mode2~0 := 0; 194#L89-2 havoc node3_#t~ite10, node3_#t~ite11, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 195#L123 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 163#L126 assume !(node3_~m3~0 != ~nomsg~0); 165#L126-1 ~mode3~0 := 0; 189#L123-2 ~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; 217#L233 assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 177#L233-1 check_#res := check_~tmp~1; 201#L245 main_#t~ret29 := check_#res;main_~c1~0 := main_#t~ret29;havoc main_#t~ret29;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 202#L304 assume !(0 == assert_~arg % 256); 203#L299 main_#t~post30 := main_~i2~0;main_~i2~0 := 1 + main_#t~post30;havoc main_#t~post30; 198#L280-2 [2021-10-28 22:58:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:10,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1898425768, now seen corresponding path program 1 times [2021-10-28 22:58:10,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:10,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032938131] [2021-10-28 22:58:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:10,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:10,190 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 22:58:10,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:10,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032938131] [2021-10-28 22:58:10,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032938131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:10,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:10,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:58:10,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663137132] [2021-10-28 22:58:10,193 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:58:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:10,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1582780898, now seen corresponding path program 2 times [2021-10-28 22:58:10,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:10,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141557695] [2021-10-28 22:58:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:10,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:10,352 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 22:58:10,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:10,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141557695] [2021-10-28 22:58:10,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141557695] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:10,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:10,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:58:10,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609789823] [2021-10-28 22:58:10,354 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:58:10,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:10,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:10,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:10,356 INFO L87 Difference]: Start difference. First operand 70 states and 115 transitions. cyclomatic complexity: 46 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 22:58:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:10,476 INFO L93 Difference]: Finished difference Result 120 states and 192 transitions. [2021-10-28 22:58:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:58:10,478 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 192 transitions. [2021-10-28 22:58:10,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 22:58:10,482 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 117 states and 173 transitions. [2021-10-28 22:58:10,482 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-10-28 22:58:10,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-10-28 22:58:10,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 173 transitions. [2021-10-28 22:58:10,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:58:10,485 INFO L681 BuchiCegarLoop]: Abstraction has 117 states and 173 transitions. [2021-10-28 22:58:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 173 transitions. [2021-10-28 22:58:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 70. [2021-10-28 22:58:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 1.4) internal successors, (98), 69 states have internal predecessors, (98), 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 22:58:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2021-10-28 22:58:10,498 INFO L704 BuchiCegarLoop]: Abstraction has 70 states and 98 transitions. [2021-10-28 22:58:10,499 INFO L587 BuchiCegarLoop]: Abstraction has 70 states and 98 transitions. [2021-10-28 22:58:10,499 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 22:58:10,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 98 transitions. [2021-10-28 22:58:10,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 22:58:10,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:58:10,502 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:58:10,510 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 22:58:10,511 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 22:58:10,511 INFO L791 eck$LassoCheckResult]: Stem: 429#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(49);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; 416#L-1 havoc main_#res;havoc main_#t~nondet12, 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~ret28, main_#t~ret29, main_#t~post30, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet12;havoc main_#t~nondet12;~id1~0 := main_#t~nondet13;havoc main_#t~nondet13;~st1~0 := main_#t~nondet14;havoc main_#t~nondet14;~send1~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode1~0 := main_#t~nondet16;havoc main_#t~nondet16;~alive1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~alive2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~alive3~0 := main_#t~nondet27;havoc main_#t~nondet27;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 417#L156 assume 0 == ~r1~0; 386#L157 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 >= 1; 387#L158 assume ~id1~0 >= 0; 391#L159 assume 0 == ~st1~0; 392#L160 assume ~send1~0 == ~id1~0; 396#L161 assume 0 == ~mode1~0 % 256; 397#L162 assume ~id2~0 >= 0; 411#L163 assume 0 == ~st2~0; 400#L164 assume ~send2~0 == ~id2~0; 394#L165 assume 0 == ~mode2~0 % 256; 395#L166 assume ~id3~0 >= 0; 403#L167 assume 0 == ~st3~0; 384#L168 assume ~send3~0 == ~id3~0; 385#L169 assume 0 == ~mode3~0 % 256; 433#L170 assume ~id1~0 != ~id2~0; 420#L171 assume ~id1~0 != ~id3~0; 418#L172 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 408#L156-1 init_#res := init_~tmp~0; 409#L225 main_#t~ret28 := init_#res;main_~i2~0 := main_#t~ret28;havoc main_#t~ret28; 414#L272 assume !(0 == main_~i2~0); 401#L272-2 ~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; 402#L280-2 [2021-10-28 22:58:10,512 INFO L793 eck$LassoCheckResult]: Loop: 402#L280-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 415#L57 assume !(0 != ~mode1~0 % 256); 434#L75 assume !(0 != ~alive1~0 % 256); 427#L75-2 ~mode1~0 := 1; 422#L57-2 havoc node2_#t~ite8, node2_#t~ite9, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 376#L89 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 378#L92 assume !(node2_~m2~0 != ~nomsg~0); 389#L92-1 ~mode2~0 := 0; 398#L89-2 havoc node3_#t~ite10, node3_#t~ite11, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 399#L123 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 368#L126 assume !(node3_~m3~0 != ~nomsg~0); 370#L126-1 ~mode3~0 := 0; 393#L123-2 ~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; 423#L233 assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 382#L233-1 check_#res := check_~tmp~1; 405#L245 main_#t~ret29 := check_#res;main_~c1~0 := main_#t~ret29;havoc main_#t~ret29;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 406#L304 assume !(0 == assert_~arg % 256); 407#L299 main_#t~post30 := main_~i2~0;main_~i2~0 := 1 + main_#t~post30;havoc main_#t~post30; 402#L280-2 [2021-10-28 22:58:10,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:10,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1524872798, now seen corresponding path program 1 times [2021-10-28 22:58:10,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:10,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227345600] [2021-10-28 22:58:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:10,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:10,593 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:10,669 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1582780898, now seen corresponding path program 3 times [2021-10-28 22:58:10,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:10,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686317409] [2021-10-28 22:58:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:10,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:10,810 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 22:58:10,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:10,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686317409] [2021-10-28 22:58:10,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686317409] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:10,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:10,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:58:10,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742065745] [2021-10-28 22:58:10,813 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:58:10,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:10,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:58:10,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:58:10,814 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. cyclomatic complexity: 29 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 22:58:10,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:10,877 INFO L93 Difference]: Finished difference Result 73 states and 100 transitions. [2021-10-28 22:58:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:58:10,878 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 100 transitions. [2021-10-28 22:58:10,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 22:58:10,881 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 70 states and 96 transitions. [2021-10-28 22:58:10,881 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2021-10-28 22:58:10,882 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2021-10-28 22:58:10,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 96 transitions. [2021-10-28 22:58:10,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:58:10,899 INFO L681 BuchiCegarLoop]: Abstraction has 70 states and 96 transitions. [2021-10-28 22:58:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states and 96 transitions. [2021-10-28 22:58:10,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-28 22:58:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 69 states have internal predecessors, (96), 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 22:58:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2021-10-28 22:58:10,905 INFO L704 BuchiCegarLoop]: Abstraction has 70 states and 96 transitions. [2021-10-28 22:58:10,906 INFO L587 BuchiCegarLoop]: Abstraction has 70 states and 96 transitions. [2021-10-28 22:58:10,906 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 22:58:10,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 96 transitions. [2021-10-28 22:58:10,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 22:58:10,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:58:10,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:58:10,908 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 22:58:10,909 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 22:58:10,909 INFO L791 eck$LassoCheckResult]: Stem: 584#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(49);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; 571#L-1 havoc main_#res;havoc main_#t~nondet12, 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~ret28, main_#t~ret29, main_#t~post30, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet12;havoc main_#t~nondet12;~id1~0 := main_#t~nondet13;havoc main_#t~nondet13;~st1~0 := main_#t~nondet14;havoc main_#t~nondet14;~send1~0 := main_#t~nondet15;havoc main_#t~nondet15;~mode1~0 := main_#t~nondet16;havoc main_#t~nondet16;~alive1~0 := main_#t~nondet17;havoc main_#t~nondet17;~id2~0 := main_#t~nondet18;havoc main_#t~nondet18;~st2~0 := main_#t~nondet19;havoc main_#t~nondet19;~send2~0 := main_#t~nondet20;havoc main_#t~nondet20;~mode2~0 := main_#t~nondet21;havoc main_#t~nondet21;~alive2~0 := main_#t~nondet22;havoc main_#t~nondet22;~id3~0 := main_#t~nondet23;havoc main_#t~nondet23;~st3~0 := main_#t~nondet24;havoc main_#t~nondet24;~send3~0 := main_#t~nondet25;havoc main_#t~nondet25;~mode3~0 := main_#t~nondet26;havoc main_#t~nondet26;~alive3~0 := main_#t~nondet27;havoc main_#t~nondet27;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 572#L156 assume 0 == ~r1~0; 541#L157 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 >= 1; 542#L158 assume ~id1~0 >= 0; 545#L159 assume 0 == ~st1~0; 546#L160 assume ~send1~0 == ~id1~0; 551#L161 assume 0 == ~mode1~0 % 256; 552#L162 assume ~id2~0 >= 0; 566#L163 assume 0 == ~st2~0; 555#L164 assume ~send2~0 == ~id2~0; 549#L165 assume 0 == ~mode2~0 % 256; 550#L166 assume ~id3~0 >= 0; 558#L167 assume 0 == ~st3~0; 539#L168 assume ~send3~0 == ~id3~0; 540#L169 assume 0 == ~mode3~0 % 256; 588#L170 assume ~id1~0 != ~id2~0; 575#L171 assume ~id1~0 != ~id3~0; 573#L172 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 563#L156-1 init_#res := init_~tmp~0; 564#L225 main_#t~ret28 := init_#res;main_~i2~0 := main_#t~ret28;havoc main_#t~ret28; 569#L272 assume !(0 == main_~i2~0); 556#L272-2 ~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; 557#L280-2 [2021-10-28 22:58:10,909 INFO L793 eck$LassoCheckResult]: Loop: 557#L280-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 570#L57 assume !(0 != ~mode1~0 % 256); 589#L75 assume !(0 != ~alive1~0 % 256); 582#L75-2 ~mode1~0 := 1; 577#L57-2 havoc node2_#t~ite8, node2_#t~ite9, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 531#L89 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 533#L92 assume !(node2_~m2~0 != ~nomsg~0); 544#L92-1 ~mode2~0 := 0; 553#L89-2 havoc node3_#t~ite10, node3_#t~ite11, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 554#L123 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 523#L126 assume !(node3_~m3~0 != ~nomsg~0); 525#L126-1 ~mode3~0 := 0; 548#L123-2 ~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; 578#L233 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 536#L234 assume ~r1~0 < 3;check_~tmp~1 := 1; 537#L233-1 check_#res := check_~tmp~1; 560#L245 main_#t~ret29 := check_#res;main_~c1~0 := main_#t~ret29;havoc main_#t~ret29;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 561#L304 assume !(0 == assert_~arg % 256); 562#L299 main_#t~post30 := main_~i2~0;main_~i2~0 := 1 + main_#t~post30;havoc main_#t~post30; 557#L280-2 [2021-10-28 22:58:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:10,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1524872798, now seen corresponding path program 2 times [2021-10-28 22:58:10,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:10,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368982514] [2021-10-28 22:58:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:10,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:10,935 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:10,972 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:10,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2090072442, now seen corresponding path program 1 times [2021-10-28 22:58:10,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:10,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27090966] [2021-10-28 22:58:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:10,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:10,985 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:58:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:58:11,008 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:58:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash 755196925, now seen corresponding path program 1 times [2021-10-28 22:58:11,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:11,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696467772] [2021-10-28 22:58:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:11,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:11,086 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 22:58:11,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:11,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696467772] [2021-10-28 22:58:11,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696467772] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:58:11,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:58:11,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:58:11,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168750627] [2021-10-28 22:58:11,808 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:58:11,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:58:11,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:58:11,818 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:58:11,819 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:58:11,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:11,825 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:58:11,825 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:58:11,825 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-10-28 22:58:11,825 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:58:11,825 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:58:11,850 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 22:58:11,881 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 22:58:11,888 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 22:58:11,895 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 22:58:11,898 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 22:58:11,905 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 22:58:11,908 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 22:58:11,912 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 22:58:11,923 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 22:58:11,927 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 22:58:11,937 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 22:58:11,944 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 22:58:11,948 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 22:58:11,951 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 22:58:11,954 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 22:58:11,993 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 22:58:11,997 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 22:58:12,463 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:58:12,464 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:58:12,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:12,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:12,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:12,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 22:58:12,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:58:12,492 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:12,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:12,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:12,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:12,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:12,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:58:12,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:58:12,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 22:58:12,661 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:58:12,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:12,669 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:58:12,670 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:58:12,670 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:58:12,670 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:58:12,670 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:58:12,670 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:12,670 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:58:12,671 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:58:12,671 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-10-28 22:58:12,671 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:58:12,671 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:58:12,675 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 22:58:12,682 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 22:58:12,684 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 22:58:12,691 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 22:58:12,693 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 22:58:12,699 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 22:58:12,702 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 22:58:12,712 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 22:58:12,715 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 22:58:12,737 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 22:58:12,740 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 22:58:12,747 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 22:58:12,752 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 22:58:12,755 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 22:58:12,758 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 22:58:12,760 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 22:58:12,763 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 22:58:13,179 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:58:13,185 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:58:13,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:13,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:13,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:13,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 22:58:13,197 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 22:58:13,210 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:58:13,210 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:58:13,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:58:13,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:58:13,211 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:58:13,215 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:58:13,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:58:13,222 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:58:13,230 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 22:58:13,230 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 22:58:13,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:58:13,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:13,234 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:58:13,243 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:58:13,244 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:58:13,244 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:58:13,245 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 22:58:13,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 22:58:13,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:13,294 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:58:13,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:13,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:13,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:58:13,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:13,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:58:13,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:13,822 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 22:58:13,827 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 22:58:13,828 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 96 transitions. cyclomatic complexity: 27 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 22:58:13,907 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 96 transitions. cyclomatic complexity: 27. 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 117 states and 170 transitions. Complement of second has 4 states. [2021-10-28 22:58:13,909 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 22:58:13,910 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 22:58:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2021-10-28 22:58:13,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 96 transitions. Stem has 23 letters. Loop has 19 letters. [2021-10-28 22:58:13,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:13,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 96 transitions. Stem has 42 letters. Loop has 19 letters. [2021-10-28 22:58:13,916 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:13,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 96 transitions. Stem has 23 letters. Loop has 38 letters. [2021-10-28 22:58:13,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:58:13,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 170 transitions. [2021-10-28 22:58:13,926 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:58:13,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 0 states and 0 transitions. [2021-10-28 22:58:13,927 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 22:58:13,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 22:58:13,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 22:58:13,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:58:13,929 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:58:13,929 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:58:13,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:13,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:58:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:58:13,932 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 22:58:13,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:13,932 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-28 22:58:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 22:58:13,933 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-28 22:58:13,933 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:58:13,933 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 22:58:13,933 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 22:58:13,934 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 22:58:13,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 22:58:13,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:58:13,934 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:58:13,934 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:58:13,935 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:58:13,935 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 22:58:13,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 22:58:13,935 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:58:13,935 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 22:58:13,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:58:13 BoogieIcfgContainer [2021-10-28 22:58:13,942 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 22:58:13,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:58:13,943 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:58:13,943 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:58:13,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:09" (3/4) ... [2021-10-28 22:58:13,949 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:58:13,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:58:13,952 INFO L168 Benchmark]: Toolchain (without parser) took 5838.07 ms. Allocated memory was 79.7 MB in the beginning and 134.2 MB in the end (delta: 54.5 MB). Free memory was 41.0 MB in the beginning and 81.1 MB in the end (delta: -40.1 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:13,953 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:58:13,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.59 ms. Allocated memory was 79.7 MB in the beginning and 107.0 MB in the end (delta: 27.3 MB). Free memory was 40.8 MB in the beginning and 80.8 MB in the end (delta: -40.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:13,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.44 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 78.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:13,961 INFO L168 Benchmark]: Boogie Preprocessor took 91.40 ms. Allocated memory is still 107.0 MB. Free memory was 78.7 MB in the beginning and 77.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:13,963 INFO L168 Benchmark]: RCFGBuilder took 594.37 ms. Allocated memory is still 107.0 MB. Free memory was 77.2 MB in the beginning and 60.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:13,963 INFO L168 Benchmark]: BuchiAutomizer took 4666.34 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 60.5 MB in the beginning and 81.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2021-10-28 22:58:13,964 INFO L168 Benchmark]: Witness Printer took 6.74 ms. Allocated memory is still 134.2 MB. Free memory is still 81.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:58:13,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 404.59 ms. Allocated memory was 79.7 MB in the beginning and 107.0 MB in the end (delta: 27.3 MB). Free memory was 40.8 MB in the beginning and 80.8 MB in the end (delta: -40.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.44 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 78.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.40 ms. Allocated memory is still 107.0 MB. Free memory was 78.7 MB in the beginning and 77.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 594.37 ms. Allocated memory is still 107.0 MB. Free memory was 77.2 MB in the beginning and 60.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4666.34 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 60.5 MB in the beginning and 81.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Witness Printer took 6.74 ms. Allocated memory is still 134.2 MB. Free memory is still 81.1 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 4.5s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 3.4s. 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, 47 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 70 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 421 SDtfs, 173 SDslu, 664 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: inital98 mio100 ax100 hnf100 lsp35 ukn100 mio100 lsp100 div137 bol100 ite100 ukn100 eq164 hnf86 smp100 dnf100 smp100 tf102 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 58ms 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 22:58:14,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2797e2-8160-4894-bf9a-162d298a65db/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...