./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt --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 afa37805b5dd75e7d693edd5075ed8bd4a944c21 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:03:55,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:03:55,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:03:55,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:03:55,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:03:55,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:03:55,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:03:55,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:03:55,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:03:55,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:03:55,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:03:55,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:03:55,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:03:55,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:03:55,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:03:55,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:03:55,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:03:55,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:03:55,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:03:55,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:03:55,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:03:55,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:03:55,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:03:55,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:03:55,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:03:55,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:03:55,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:03:55,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:03:55,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:03:55,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:03:55,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:03:55,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:03:55,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:03:55,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:03:55,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:03:55,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:03:55,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:03:55,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:03:55,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:03:55,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:03:55,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:03:55,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-13 00:03:55,822 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:03:55,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:03:55,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:03:55,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:03:55,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:03:55,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:03:55,826 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:03:55,827 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:03:55,827 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:03:55,827 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:03:55,827 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:03:55,828 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:03:55,828 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:03:55,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:03:55,829 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:03:55,829 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:03:55,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:03:55,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:03:55,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:03:55,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:03:55,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:03:55,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:03:55,831 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:03:55,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:03:55,832 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:03:55,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:03:55,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:03:55,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:03:55,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:03:55,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:03:55,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:03:55,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:03:55,835 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:03:55,836 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_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afa37805b5dd75e7d693edd5075ed8bd4a944c21 [2021-10-13 00:03:56,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:03:56,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:03:56,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:03:56,166 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:03:56,167 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:03:56,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2021-10-13 00:03:56,256 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/data/8e603cf05/69f0b383ce3f4c10b297b83b4d21520e/FLAG9d595f619 [2021-10-13 00:03:56,903 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:03:56,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2021-10-13 00:03:56,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/data/8e603cf05/69f0b383ce3f4c10b297b83b4d21520e/FLAG9d595f619 [2021-10-13 00:03:57,187 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/data/8e603cf05/69f0b383ce3f4c10b297b83b4d21520e [2021-10-13 00:03:57,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:03:57,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:03:57,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:03:57,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:03:57,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:03:57,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f22cc0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57, skipping insertion in model container [2021-10-13 00:03:57,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:03:57,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:03:57,503 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_7ff444eb-10a1-41cd-af2f-08debfb94f47/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c[5984,5997] [2021-10-13 00:03:57,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:03:57,514 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:03:57,559 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_7ff444eb-10a1-41cd-af2f-08debfb94f47/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c[5984,5997] [2021-10-13 00:03:57,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:03:57,577 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:03:57,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57 WrapperNode [2021-10-13 00:03:57,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:03:57,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:03:57,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:03:57,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:03:57,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:03:57,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:03:57,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:03:57,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:03:57,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:03:57,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:03:57,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:03:57,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:03:57,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57" (1/1) ... [2021-10-13 00:03:57,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:03:57,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:03:57,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:03:57,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:03:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:03:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:03:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:03:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:03:58,302 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:03:58,302 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-13 00:03:58,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:03:58 BoogieIcfgContainer [2021-10-13 00:03:58,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:03:58,315 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:03:58,315 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:03:58,319 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:03:58,320 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:03:58,321 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:03:57" (1/3) ... [2021-10-13 00:03:58,322 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@506759b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:03:58, skipping insertion in model container [2021-10-13 00:03:58,323 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:03:58,323 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:03:57" (2/3) ... [2021-10-13 00:03:58,323 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@506759b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:03:58, skipping insertion in model container [2021-10-13 00:03:58,323 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:03:58,324 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:03:58" (3/3) ... [2021-10-13 00:03:58,325 INFO L389 chiAutomizerObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2021-10-13 00:03:58,399 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:03:58,399 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:03:58,399 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:03:58,399 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:03:58,399 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:03:58,400 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:03:58,400 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:03:58,400 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:03:58,427 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 61 states, 60 states have (on average 1.6666666666666667) internal successors, (100), 60 states have internal predecessors, (100), 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) [2021-10-13 00:03:58,468 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-10-13 00:03:58,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:03:58,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:03:58,479 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:58,480 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:58,480 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:03:58,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 61 states, 60 states have (on average 1.6666666666666667) internal successors, (100), 60 states have internal predecessors, (100), 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) [2021-10-13 00:03:58,498 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-10-13 00:03:58,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:03:58,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:03:58,503 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:58,504 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:58,512 INFO L791 eck$LassoCheckResult]: Stem: 44#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(34);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;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0; 36#L-1true havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, 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~ret23, main_#t~ret24, main_#t~post25, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet10;havoc main_#t~nondet10;~id1~0 := main_#t~nondet11;havoc main_#t~nondet11;~st1~0 := main_#t~nondet12;havoc main_#t~nondet12;~send1~0 := main_#t~nondet13;havoc main_#t~nondet13;~mode1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id2~0 := main_#t~nondet15;havoc main_#t~nondet15;~st2~0 := main_#t~nondet16;havoc main_#t~nondet16;~send2~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode2~0 := main_#t~nondet18;havoc main_#t~nondet18;~id3~0 := main_#t~nondet19;havoc main_#t~nondet19;~st3~0 := main_#t~nondet20;havoc main_#t~nondet20;~send3~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode3~0 := main_#t~nondet22;havoc main_#t~nondet22;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 41#L131true assume !(0 == ~r1~0);init_~tmp~0 := 0; 24#L131-1true init_#res := init_~tmp~0; 59#L196true main_#t~ret23 := init_#res;main_~i2~0 := main_#t~ret23;havoc main_#t~ret23; 60#L248true assume !(0 == main_~i2~0); 30#L248-2true ~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; 12#L256-2true [2021-10-13 00:03:58,516 INFO L793 eck$LassoCheckResult]: Loop: 12#L256-2true assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 4#L54true assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 34#L58true assume !(node1_~m1~0 != ~nomsg~0); 11#L58-1true ~mode1~0 := 0; 13#L54-2true havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 20#L82true assume !(0 != ~mode2~0 % 256); 18#L95true assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite8 := ~send2~0; 29#L95-2true ~p2_new~0 := (if node2_#t~ite8 % 256 <= 127 then node2_#t~ite8 % 256 else node2_#t~ite8 % 256 - 256);havoc node2_#t~ite8;~mode2~0 := 1; 55#L82-2true havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 50#L107true assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 6#L110true assume !(node3_~m3~0 != ~nomsg~0); 16#L110-1true ~mode3~0 := 0; 61#L107-2true ~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; 37#L204true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 49#L204-1true check_#res := check_~tmp~1; 14#L224true main_#t~ret24 := check_#res;main_~c1~0 := main_#t~ret24;havoc main_#t~ret24;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 22#L280true assume !(0 == assert_~arg % 256); 39#L275true main_#t~post25 := main_~i2~0;main_~i2~0 := 1 + main_#t~post25;havoc main_#t~post25; 12#L256-2true [2021-10-13 00:03:58,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:58,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1892699938, now seen corresponding path program 1 times [2021-10-13 00:03:58,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:58,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776694181] [2021-10-13 00:03:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:58,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:58,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:58,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776694181] [2021-10-13 00:03:58,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776694181] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:58,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:58,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:03:58,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022576776] [2021-10-13 00:03:58,958 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:03:58,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:58,959 INFO L82 PathProgramCache]: Analyzing trace with hash 855687206, now seen corresponding path program 1 times [2021-10-13 00:03:58,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:58,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943829871] [2021-10-13 00:03:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:58,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:59,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:59,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943829871] [2021-10-13 00:03:59,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943829871] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:59,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:59,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:03:59,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796358177] [2021-10-13 00:03:59,169 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:03:59,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:59,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:03:59,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:03:59,190 INFO L87 Difference]: Start difference. First operand has 61 states, 60 states have (on average 1.6666666666666667) internal successors, (100), 60 states have internal predecessors, (100), 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 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) [2021-10-13 00:03:59,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:59,332 INFO L93 Difference]: Finished difference Result 99 states and 154 transitions. [2021-10-13 00:03:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:03:59,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 154 transitions. [2021-10-13 00:03:59,348 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2021-10-13 00:03:59,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 90 states and 130 transitions. [2021-10-13 00:03:59,358 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 90 [2021-10-13 00:03:59,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2021-10-13 00:03:59,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 130 transitions. [2021-10-13 00:03:59,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:03:59,364 INFO L681 BuchiCegarLoop]: Abstraction has 90 states and 130 transitions. [2021-10-13 00:03:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 130 transitions. [2021-10-13 00:03:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 56. [2021-10-13 00:03:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 55 states have internal predecessors, (76), 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) [2021-10-13 00:03:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2021-10-13 00:03:59,410 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-10-13 00:03:59,410 INFO L587 BuchiCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-10-13 00:03:59,411 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:03:59,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 76 transitions. [2021-10-13 00:03:59,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2021-10-13 00:03:59,420 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:03:59,421 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:03:59,423 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] [2021-10-13 00:03:59,423 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:03:59,424 INFO L791 eck$LassoCheckResult]: Stem: 230#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(34);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;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0; 221#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, 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~ret23, main_#t~ret24, main_#t~post25, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet10;havoc main_#t~nondet10;~id1~0 := main_#t~nondet11;havoc main_#t~nondet11;~st1~0 := main_#t~nondet12;havoc main_#t~nondet12;~send1~0 := main_#t~nondet13;havoc main_#t~nondet13;~mode1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id2~0 := main_#t~nondet15;havoc main_#t~nondet15;~st2~0 := main_#t~nondet16;havoc main_#t~nondet16;~send2~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode2~0 := main_#t~nondet18;havoc main_#t~nondet18;~id3~0 := main_#t~nondet19;havoc main_#t~nondet19;~st3~0 := main_#t~nondet20;havoc main_#t~nondet20;~send3~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode3~0 := main_#t~nondet22;havoc main_#t~nondet22;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 222#L131 assume 0 == ~r1~0; 227#L132 assume ~id1~0 >= 0; 225#L133 assume 0 == ~st1~0; 226#L134 assume ~send1~0 == ~id1~0; 219#L135 assume 0 == ~mode1~0 % 256; 198#L136 assume ~id2~0 >= 0; 199#L137 assume 0 == ~st2~0; 232#L138 assume ~send2~0 == ~id2~0; 210#L139 assume 0 == ~mode2~0 % 256; 211#L140 assume ~id3~0 >= 0; 228#L141 assume 0 == ~st3~0; 215#L142 assume ~send3~0 == ~id3~0; 213#L143 assume 0 == ~mode3~0 % 256; 187#L144 assume ~id1~0 != ~id2~0; 188#L145 assume ~id1~0 != ~id3~0; 201#L146 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 202#L131-1 init_#res := init_~tmp~0; 209#L196 main_#t~ret23 := init_#res;main_~i2~0 := main_#t~ret23;havoc main_#t~ret23; 233#L248 assume !(0 == main_~i2~0); 216#L248-2 ~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; 194#L256-2 [2021-10-13 00:03:59,431 INFO L793 eck$LassoCheckResult]: Loop: 194#L256-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 178#L54 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 179#L58 assume !(node1_~m1~0 != ~nomsg~0); 192#L58-1 ~mode1~0 := 0; 193#L54-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 195#L82 assume !(0 != ~mode2~0 % 256); 203#L95 assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite8 := ~send2~0; 204#L95-2 ~p2_new~0 := (if node2_#t~ite8 % 256 <= 127 then node2_#t~ite8 % 256 else node2_#t~ite8 % 256 - 256);havoc node2_#t~ite8;~mode2~0 := 1; 214#L82-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 231#L107 assume !(0 != ~mode3~0 % 256); 229#L120 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite9 := ~send3~0; 212#L120-2 ~p3_new~0 := (if node3_#t~ite9 % 256 <= 127 then node3_#t~ite9 % 256 else node3_#t~ite9 % 256 - 256);havoc node3_#t~ite9;~mode3~0 := 1; 200#L107-2 ~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; 223#L204 assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 220#L204-1 check_#res := check_~tmp~1; 196#L224 main_#t~ret24 := check_#res;main_~c1~0 := main_#t~ret24;havoc main_#t~ret24;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 197#L280 assume !(0 == assert_~arg % 256); 207#L275 main_#t~post25 := main_~i2~0;main_~i2~0 := 1 + main_#t~post25;havoc main_#t~post25; 194#L256-2 [2021-10-13 00:03:59,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:59,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1473464705, now seen corresponding path program 1 times [2021-10-13 00:03:59,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:59,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809673870] [2021-10-13 00:03:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:59,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:03:59,495 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:03:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:03:59,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:03:59,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:59,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2073672604, now seen corresponding path program 1 times [2021-10-13 00:03:59,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:59,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865938975] [2021-10-13 00:03:59,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:59,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:03:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:03:59,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:03:59,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865938975] [2021-10-13 00:03:59,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865938975] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:03:59,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:03:59,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:03:59,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882022981] [2021-10-13 00:03:59,747 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:03:59,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:03:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:03:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:03:59,749 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. cyclomatic complexity: 21 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) [2021-10-13 00:03:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:03:59,814 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2021-10-13 00:03:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:03:59,815 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2021-10-13 00:03:59,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2021-10-13 00:03:59,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 73 transitions. [2021-10-13 00:03:59,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-10-13 00:03:59,821 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2021-10-13 00:03:59,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 73 transitions. [2021-10-13 00:03:59,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:03:59,822 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-10-13 00:03:59,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 73 transitions. [2021-10-13 00:03:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-13 00:03:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 55 states have internal predecessors, (73), 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) [2021-10-13 00:03:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-10-13 00:03:59,835 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-10-13 00:03:59,835 INFO L587 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-10-13 00:03:59,835 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 00:03:59,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 73 transitions. [2021-10-13 00:03:59,838 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2021-10-13 00:03:59,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:03:59,839 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:03:59,841 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] [2021-10-13 00:03:59,841 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, 1] [2021-10-13 00:03:59,841 INFO L791 eck$LassoCheckResult]: Stem: 357#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(34);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;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0; 347#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, 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~ret23, main_#t~ret24, main_#t~post25, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet10;havoc main_#t~nondet10;~id1~0 := main_#t~nondet11;havoc main_#t~nondet11;~st1~0 := main_#t~nondet12;havoc main_#t~nondet12;~send1~0 := main_#t~nondet13;havoc main_#t~nondet13;~mode1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id2~0 := main_#t~nondet15;havoc main_#t~nondet15;~st2~0 := main_#t~nondet16;havoc main_#t~nondet16;~send2~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode2~0 := main_#t~nondet18;havoc main_#t~nondet18;~id3~0 := main_#t~nondet19;havoc main_#t~nondet19;~st3~0 := main_#t~nondet20;havoc main_#t~nondet20;~send3~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode3~0 := main_#t~nondet22;havoc main_#t~nondet22;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 348#L131 assume 0 == ~r1~0; 354#L132 assume ~id1~0 >= 0; 352#L133 assume 0 == ~st1~0; 353#L134 assume ~send1~0 == ~id1~0; 346#L135 assume 0 == ~mode1~0 % 256; 325#L136 assume ~id2~0 >= 0; 326#L137 assume 0 == ~st2~0; 359#L138 assume ~send2~0 == ~id2~0; 337#L139 assume 0 == ~mode2~0 % 256; 338#L140 assume ~id3~0 >= 0; 355#L141 assume 0 == ~st3~0; 342#L142 assume ~send3~0 == ~id3~0; 340#L143 assume 0 == ~mode3~0 % 256; 314#L144 assume ~id1~0 != ~id2~0; 315#L145 assume ~id1~0 != ~id3~0; 328#L146 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 329#L131-1 init_#res := init_~tmp~0; 336#L196 main_#t~ret23 := init_#res;main_~i2~0 := main_#t~ret23;havoc main_#t~ret23; 360#L248 assume !(0 == main_~i2~0); 343#L248-2 ~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; 321#L256-2 [2021-10-13 00:03:59,842 INFO L793 eck$LassoCheckResult]: Loop: 321#L256-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 305#L54 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 306#L58 assume !(node1_~m1~0 != ~nomsg~0); 319#L58-1 ~mode1~0 := 0; 320#L54-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 322#L82 assume !(0 != ~mode2~0 % 256); 330#L95 assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite8 := ~send2~0; 331#L95-2 ~p2_new~0 := (if node2_#t~ite8 % 256 <= 127 then node2_#t~ite8 % 256 else node2_#t~ite8 % 256 - 256);havoc node2_#t~ite8;~mode2~0 := 1; 341#L82-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 358#L107 assume !(0 != ~mode3~0 % 256); 356#L120 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite9 := ~send3~0; 339#L120-2 ~p3_new~0 := (if node3_#t~ite9 % 256 <= 127 then node3_#t~ite9 % 256 else node3_#t~ite9 % 256 - 256);havoc node3_#t~ite9;~mode3~0 := 1; 327#L107-2 ~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; 349#L204 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 316#L205 assume ~r1~0 >= 3; 318#L209 assume ~r1~0 < 3;check_~tmp~1 := 1; 350#L204-1 check_#res := check_~tmp~1; 323#L224 main_#t~ret24 := check_#res;main_~c1~0 := main_#t~ret24;havoc main_#t~ret24;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 324#L280 assume !(0 == assert_~arg % 256); 334#L275 main_#t~post25 := main_~i2~0;main_~i2~0 := 1 + main_#t~post25;havoc main_#t~post25; 321#L256-2 [2021-10-13 00:03:59,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:59,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1473464705, now seen corresponding path program 2 times [2021-10-13 00:03:59,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:59,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229129551] [2021-10-13 00:03:59,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:59,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:03:59,894 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:03:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:03:59,951 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:03:59,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:03:59,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1481276532, now seen corresponding path program 1 times [2021-10-13 00:03:59,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:03:59,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458974576] [2021-10-13 00:03:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:03:59,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:03:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:04:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:04:00,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:04:00,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458974576] [2021-10-13 00:04:00,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458974576] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:04:00,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:04:00,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:04:00,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74136595] [2021-10-13 00:04:00,013 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:04:00,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:04:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:04:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:04:00,016 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. cyclomatic complexity: 18 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-13 00:04:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:04:00,071 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2021-10-13 00:04:00,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:04:00,072 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 113 transitions. [2021-10-13 00:04:00,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 62 [2021-10-13 00:04:00,076 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 84 states and 113 transitions. [2021-10-13 00:04:00,078 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84 [2021-10-13 00:04:00,078 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84 [2021-10-13 00:04:00,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 113 transitions. [2021-10-13 00:04:00,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:04:00,081 INFO L681 BuchiCegarLoop]: Abstraction has 84 states and 113 transitions. [2021-10-13 00:04:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 113 transitions. [2021-10-13 00:04:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-13 00:04:00,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 84 states have (on average 1.3452380952380953) internal successors, (113), 83 states have internal predecessors, (113), 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) [2021-10-13 00:04:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2021-10-13 00:04:00,093 INFO L704 BuchiCegarLoop]: Abstraction has 84 states and 113 transitions. [2021-10-13 00:04:00,093 INFO L587 BuchiCegarLoop]: Abstraction has 84 states and 113 transitions. [2021-10-13 00:04:00,093 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 00:04:00,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84 states and 113 transitions. [2021-10-13 00:04:00,095 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 62 [2021-10-13 00:04:00,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:04:00,096 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:04:00,098 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] [2021-10-13 00:04:00,098 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, 1, 1] [2021-10-13 00:04:00,099 INFO L791 eck$LassoCheckResult]: Stem: 506#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(34);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;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0; 495#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, 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~ret23, main_#t~ret24, main_#t~post25, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet10;havoc main_#t~nondet10;~id1~0 := main_#t~nondet11;havoc main_#t~nondet11;~st1~0 := main_#t~nondet12;havoc main_#t~nondet12;~send1~0 := main_#t~nondet13;havoc main_#t~nondet13;~mode1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id2~0 := main_#t~nondet15;havoc main_#t~nondet15;~st2~0 := main_#t~nondet16;havoc main_#t~nondet16;~send2~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode2~0 := main_#t~nondet18;havoc main_#t~nondet18;~id3~0 := main_#t~nondet19;havoc main_#t~nondet19;~st3~0 := main_#t~nondet20;havoc main_#t~nondet20;~send3~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode3~0 := main_#t~nondet22;havoc main_#t~nondet22;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 496#L131 assume 0 == ~r1~0; 503#L132 assume ~id1~0 >= 0; 501#L133 assume 0 == ~st1~0; 502#L134 assume ~send1~0 == ~id1~0; 492#L135 assume 0 == ~mode1~0 % 256; 470#L136 assume ~id2~0 >= 0; 471#L137 assume 0 == ~st2~0; 511#L138 assume ~send2~0 == ~id2~0; 482#L139 assume 0 == ~mode2~0 % 256; 483#L140 assume ~id3~0 >= 0; 504#L141 assume 0 == ~st3~0; 487#L142 assume ~send3~0 == ~id3~0; 485#L143 assume 0 == ~mode3~0 % 256; 460#L144 assume ~id1~0 != ~id2~0; 461#L145 assume ~id1~0 != ~id3~0; 473#L146 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 474#L131-1 init_#res := init_~tmp~0; 481#L196 main_#t~ret23 := init_#res;main_~i2~0 := main_#t~ret23;havoc main_#t~ret23; 512#L248 assume !(0 == main_~i2~0); 488#L248-2 ~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; 466#L256-2 [2021-10-13 00:04:00,100 INFO L793 eck$LassoCheckResult]: Loop: 466#L256-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 451#L54 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 452#L58 assume !(node1_~m1~0 != ~nomsg~0); 464#L58-1 ~mode1~0 := 0; 465#L54-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 467#L82 assume !(0 != ~mode2~0 % 256); 475#L95 assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite8 := ~send2~0; 476#L95-2 ~p2_new~0 := (if node2_#t~ite8 % 256 <= 127 then node2_#t~ite8 % 256 else node2_#t~ite8 % 256 - 256);havoc node2_#t~ite8;~mode2~0 := 1; 486#L82-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 509#L107 assume !(0 != ~mode3~0 % 256); 505#L120 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite9 := ~send3~0; 484#L120-2 ~p3_new~0 := (if node3_#t~ite9 % 256 <= 127 then node3_#t~ite9 % 256 else node3_#t~ite9 % 256 - 256);havoc node3_#t~ite9;~mode3~0 := 1; 472#L107-2 ~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; 513#L204 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 514#L205 assume !(~r1~0 >= 3); 493#L208 assume 0 == ~st1~0 + ~st2~0 + ~st3~0; 494#L209 assume ~r1~0 < 3;check_~tmp~1 := 1; 508#L204-1 check_#res := check_~tmp~1; 468#L224 main_#t~ret24 := check_#res;main_~c1~0 := main_#t~ret24;havoc main_#t~ret24;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 469#L280 assume !(0 == assert_~arg % 256); 479#L275 main_#t~post25 := main_~i2~0;main_~i2~0 := 1 + main_#t~post25;havoc main_#t~post25; 466#L256-2 [2021-10-13 00:04:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:04:00,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1473464705, now seen corresponding path program 3 times [2021-10-13 00:04:00,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:04:00,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620212166] [2021-10-13 00:04:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:04:00,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:04:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:04:00,140 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:04:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:04:00,181 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:04:00,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:04:00,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1323327703, now seen corresponding path program 1 times [2021-10-13 00:04:00,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:04:00,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150628370] [2021-10-13 00:04:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:04:00,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:04:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:04:00,206 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:04:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:04:00,240 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:04:00,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:04:00,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1693614955, now seen corresponding path program 1 times [2021-10-13 00:04:00,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:04:00,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516815788] [2021-10-13 00:04:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:04:00,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:04:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:04:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:04:00,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:04:00,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516815788] [2021-10-13 00:04:00,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516815788] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:04:00,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:04:00,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:04:00,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505518610] [2021-10-13 00:04:01,345 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:04:01,346 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:04:01,346 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:04:01,346 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:04:01,346 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:04:01,346 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:04:01,347 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:04:01,347 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:04:01,347 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-10-13 00:04:01,347 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:04:01,348 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:04:01,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:01,927 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-10-13 00:04:05,691 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:04:05,692 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:04:05,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:04:05,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:04:05,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:04:05,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:04:05,705 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:04:05,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 00:04:05,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:04:05,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:04:05,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:04:05,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:04:05,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:04:05,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:04:05,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 00:04:05,866 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:04:05,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:04:05,874 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:04:05,874 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:04:05,874 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:04:05,875 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:04:05,875 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:04:05,875 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:04:05,875 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:04:05,875 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:04:05,875 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-10-13 00:04:05,875 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:04:05,875 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:04:05,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:05,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:05,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:05,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:05,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:05,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:05,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:05,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:05,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:05,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:05,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:06,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:06,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:06,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:04:06,376 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-10-13 00:04:09,961 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:04:09,967 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:04:09,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:04:09,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:04:09,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:04:09,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 00:04:09,974 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 [2021-10-13 00:04:09,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:04:09,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:04:09,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:04:09,984 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:04:09,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:04:09,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:04:09,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:04:10,017 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:04:10,042 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:04:10,042 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:04:10,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:04:10,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:04:10,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:04:10,060 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:04:10,060 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:04:10,061 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:04:10,061 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 11 Supporting invariants [] [2021-10-13 00:04:10,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 00:04:10,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:04:10,111 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:04:10,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:04:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:04:10,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:04:10,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:04:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:04:10,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:04:10,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:04:10,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-13 00:04:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:04:10,670 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 [2021-10-13 00:04:10,671 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 84 states and 113 transitions. cyclomatic complexity: 30 Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-10-13 00:04:10,717 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 84 states and 113 transitions. cyclomatic complexity: 30. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 145 states and 204 transitions. Complement of second has 4 states. [2021-10-13 00:04:10,717 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 [2021-10-13 00:04:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-10-13 00:04:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2021-10-13 00:04:10,720 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 73 transitions. Stem has 22 letters. Loop has 21 letters. [2021-10-13 00:04:10,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:04:10,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 73 transitions. Stem has 43 letters. Loop has 21 letters. [2021-10-13 00:04:10,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:04:10,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 73 transitions. Stem has 22 letters. Loop has 42 letters. [2021-10-13 00:04:10,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:04:10,725 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 145 states and 204 transitions. [2021-10-13 00:04:10,727 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:04:10,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 145 states to 0 states and 0 transitions. [2021-10-13 00:04:10,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 00:04:10,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 00:04:10,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 00:04:10,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:04:10,728 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:04:10,729 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:04:10,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:04:10,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:04:10,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:04:10,730 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-10-13 00:04:10,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:04:10,730 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-13 00:04:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:04:10,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-13 00:04:10,731 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:04:10,731 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:04:10,731 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 00:04:10,732 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 00:04:10,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 00:04:10,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:04:10,732 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:04:10,732 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:04:10,732 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:04:10,732 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 00:04:10,733 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:04:10,733 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:04:10,733 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 00:04:10,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:04:10 BoogieIcfgContainer [2021-10-13 00:04:10,740 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:04:10,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:04:10,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:04:10,741 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:04:10,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:03:58" (3/4) ... [2021-10-13 00:04:10,745 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:04:10,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:04:10,748 INFO L168 Benchmark]: Toolchain (without parser) took 13551.95 ms. Allocated memory was 94.4 MB in the beginning and 176.2 MB in the end (delta: 81.8 MB). Free memory was 59.5 MB in the beginning and 137.5 MB in the end (delta: -78.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:04:10,749 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 63.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:04:10,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.77 ms. Allocated memory is still 94.4 MB. Free memory was 59.2 MB in the beginning and 67.9 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:04:10,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.71 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 65.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:04:10,751 INFO L168 Benchmark]: Boogie Preprocessor took 41.98 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 64.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:04:10,752 INFO L168 Benchmark]: RCFGBuilder took 626.73 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 49.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:04:10,753 INFO L168 Benchmark]: BuchiAutomizer took 12425.20 ms. Allocated memory was 94.4 MB in the beginning and 176.2 MB in the end (delta: 81.8 MB). Free memory was 49.4 MB in the beginning and 137.5 MB in the end (delta: -88.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:04:10,753 INFO L168 Benchmark]: Witness Printer took 5.09 ms. Allocated memory is still 176.2 MB. Free memory is still 137.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:04:10,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 63.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 379.77 ms. Allocated memory is still 94.4 MB. Free memory was 59.2 MB in the beginning and 67.9 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.71 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 65.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.98 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 64.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 626.73 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 49.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 12425.20 ms. Allocated memory was 94.4 MB in the beginning and 176.2 MB in the end (delta: 81.8 MB). Free memory was 49.4 MB in the beginning and 137.5 MB in the end (delta: -88.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.09 ms. Allocated memory is still 176.2 MB. Free memory is still 137.5 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 12.3s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 11.1s. 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 52.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 34 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 84 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 347 SDtfs, 219 SDslu, 585 SDs, 0 SdLazy, 46 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.4ms Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT1 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital172 mio100 ax100 hnf100 lsp79 ukn64 mio100 lsp100 div170 bol100 ite100 ukn100 eq166 hnf68 smp100 dnf4932 smp23 tf100 neg98 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 92ms 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! [2021-10-13 00:04:10,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ff444eb-10a1-41cd-af2f-08debfb94f47/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...