./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array16_alloca_original.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array16_alloca_original.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 628be9b0d43b46482b2f1f32ff1648acbb8b41e569549b972a02e76fffda9076 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:41:30,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:41:30,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:41:30,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:41:30,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:41:30,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:41:30,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:41:30,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:41:30,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:41:30,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:41:30,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:41:30,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:41:30,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:41:30,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:41:30,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:41:30,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:41:30,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:41:30,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:41:30,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:41:30,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:41:30,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:41:30,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:41:30,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:41:30,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:41:30,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:41:30,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:41:30,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:41:30,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:41:30,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:41:30,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:41:30,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:41:30,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:41:30,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:41:30,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:41:30,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:41:30,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:41:30,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:41:30,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:41:30,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:41:30,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:41:30,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:41:30,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 19:41:30,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:41:30,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:41:30,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:41:30,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:41:30,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:41:30,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:41:30,743 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:41:30,743 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:41:30,744 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:41:30,744 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:41:30,744 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:41:30,744 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:41:30,744 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:41:30,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:41:30,745 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:41:30,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:41:30,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:41:30,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:41:30,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:41:30,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:41:30,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:41:30,746 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:41:30,746 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:41:30,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:41:30,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:41:30,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:41:30,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:41:30,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:41:30,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:41:30,748 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:41:30,748 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_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628be9b0d43b46482b2f1f32ff1648acbb8b41e569549b972a02e76fffda9076 [2021-10-21 19:41:31,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:41:31,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:41:31,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:41:31,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:41:31,035 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:41:31,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-15/array16_alloca_original.i [2021-10-21 19:41:31,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/data/36e7dd367/ddda316e157f4f8595b95c1d439be5d9/FLAGabb397094 [2021-10-21 19:41:31,782 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:41:31,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/sv-benchmarks/c/termination-15/array16_alloca_original.i [2021-10-21 19:41:31,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/data/36e7dd367/ddda316e157f4f8595b95c1d439be5d9/FLAGabb397094 [2021-10-21 19:41:32,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/data/36e7dd367/ddda316e157f4f8595b95c1d439be5d9 [2021-10-21 19:41:32,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:41:32,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:41:32,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:41:32,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:41:32,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:41:32,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6563ecf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32, skipping insertion in model container [2021-10-21 19:41:32,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:41:32,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:41:32,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:41:32,376 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:41:32,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:41:32,448 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:41:32,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32 WrapperNode [2021-10-21 19:41:32,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:41:32,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:41:32,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:41:32,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:41:32,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:41:32,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:41:32,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:41:32,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:41:32,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:41:32,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:41:32,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:41:32,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:41:32,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32" (1/1) ... [2021-10-21 19:41:32,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:32,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:32,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:32,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:41:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:41:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:41:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:41:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:41:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:41:32,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:41:32,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:41:32,834 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-21 19:41:32,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:32 BoogieIcfgContainer [2021-10-21 19:41:32,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:41:32,837 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:41:32,837 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:41:32,840 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:41:32,841 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:41:32,841 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:41:32" (1/3) ... [2021-10-21 19:41:32,842 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c81f090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:41:32, skipping insertion in model container [2021-10-21 19:41:32,842 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:41:32,843 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:32" (2/3) ... [2021-10-21 19:41:32,843 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c81f090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:41:32, skipping insertion in model container [2021-10-21 19:41:32,843 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:41:32,843 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:32" (3/3) ... [2021-10-21 19:41:32,845 INFO L389 chiAutomizerObserver]: Analyzing ICFG array16_alloca_original.i [2021-10-21 19:41:32,887 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:41:32,888 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:41:32,888 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:41:32,888 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:41:32,888 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:41:32,888 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:41:32,888 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:41:32,888 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:41:32,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:32,922 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-21 19:41:32,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:41:32,923 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:41:32,929 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-21 19:41:32,929 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:41:32,929 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:41:32,930 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:32,932 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-21 19:41:32,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:41:32,932 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:41:32,933 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-21 19:41:32,933 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:41:32,940 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 11#L367true assume !(main_~length~0 < 1); 8#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 5#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 6#L370-3true [2021-10-21 19:41:32,940 INFO L793 eck$LassoCheckResult]: Loop: 6#L370-3true assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 13#L372true assume 1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2);havoc main_#t~mem209;call write~int(0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 16#L370-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 6#L370-3true [2021-10-21 19:41:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:32,946 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2021-10-21 19:41:32,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:32,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903232839] [2021-10-21 19:41:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:32,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:33,073 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:33,106 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:33,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:33,110 INFO L82 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2021-10-21 19:41:33,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:33,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867494394] [2021-10-21 19:41:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:33,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:33,136 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:33,157 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:33,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:33,159 INFO L82 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2021-10-21 19:41:33,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:33,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606883855] [2021-10-21 19:41:33,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:33,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:33,187 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:33,215 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:33,573 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:41:33,574 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:41:33,574 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:41:33,574 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:41:33,574 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:41:33,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:33,575 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:41:33,575 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:41:33,575 INFO L133 ssoRankerPreferences]: Filename of dumped script: array16_alloca_original.i_Iteration1_Lasso [2021-10-21 19:41:33,575 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:41:33,576 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:41:33,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:33,980 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:41:33,984 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:41:33,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:33,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:33,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:34,001 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 [2021-10-21 19:41:34,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:34,011 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:34,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:41:34,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:34,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:34,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:34,015 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:34,015 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:34,032 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:34,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:34,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:34,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:34,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:34,071 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 [2021-10-21 19:41:34,080 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:34,080 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:34,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:34,081 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:34,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:34,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:34,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:34,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:41:34,101 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:34,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:34,138 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:34,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:34,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:34,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:41:34,150 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 [2021-10-21 19:41:34,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:34,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:34,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:34,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:34,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:34,160 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:34,160 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:34,183 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:34,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-21 19:41:34,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:34,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:34,204 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:34,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:41:34,220 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 [2021-10-21 19:41:34,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:34,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:34,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:34,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:34,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:34,228 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:34,229 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:34,235 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:34,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:34,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:34,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:34,262 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:34,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:41:34,266 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 [2021-10-21 19:41:34,273 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:34,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:34,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:34,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:34,277 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:41:34,277 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:41:34,302 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:34,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:34,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:34,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:34,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:34,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:41:34,329 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 [2021-10-21 19:41:34,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:34,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:34,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:34,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:34,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:34,337 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:34,338 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:34,363 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:34,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:34,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:34,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:34,406 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:34,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:41:34,408 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 [2021-10-21 19:41:34,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:34,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:34,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:34,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:34,422 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:41:34,422 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:41:34,475 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:34,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:34,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:34,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:34,504 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:34,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:41:34,506 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 [2021-10-21 19:41:34,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:34,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:34,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:34,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:34,520 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:41:34,522 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:41:34,531 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:34,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:34,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:34,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:34,555 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:34,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:41:34,558 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 [2021-10-21 19:41:34,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:34,565 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:34,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:34,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:34,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:34,566 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:34,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:34,567 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:34,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:34,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:34,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:34,588 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:34,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:41:34,590 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 [2021-10-21 19:41:34,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:34,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:34,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:34,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:34,605 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:41:34,606 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:41:34,650 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:41:34,692 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-10-21 19:41:34,692 INFO L444 ModelExtractionUtils]: 11 out of 22 variables were initially zero. Simplification set additionally 8 variables to zero. [2021-10-21 19:41:34,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:34,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:34,702 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:34,716 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:41:34,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 19:41:34,741 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-21 19:41:34,742 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:41:34,742 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2021-10-21 19:41:34,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:34,788 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-10-21 19:41:34,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:34,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:41:34,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:34,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:41:34,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:34,950 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 [2021-10-21 19:41:34,951 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:35,002 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 50 transitions. Complement of second has 7 states. [2021-10-21 19:41:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:41:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2021-10-21 19:41:35,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-21 19:41:35,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:41:35,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-21 19:41:35,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:41:35,008 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 6 letters. [2021-10-21 19:41:35,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:41:35,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2021-10-21 19:41:35,012 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:35,016 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 12 states and 17 transitions. [2021-10-21 19:41:35,017 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-21 19:41:35,017 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-21 19:41:35,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-10-21 19:41:35,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:41:35,018 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-10-21 19:41:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-10-21 19:41:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-21 19:41:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2021-10-21 19:41:35,042 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-10-21 19:41:35,042 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-10-21 19:41:35,043 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:41:35,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2021-10-21 19:41:35,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:35,044 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:41:35,044 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:41:35,044 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:35,044 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:41:35,045 INFO L791 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 114#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 121#L367 assume !(main_~length~0 < 1); 115#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 116#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 117#L370-3 assume !(main_~i~0 < main_~length~0); 118#L370-4 main_~j~0 := 0; 119#L378-2 [2021-10-21 19:41:35,045 INFO L793 eck$LassoCheckResult]: Loop: 119#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 120#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 119#L378-2 [2021-10-21 19:41:35,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:35,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2021-10-21 19:41:35,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:35,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163252806] [2021-10-21 19:41:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:35,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:35,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:35,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163252806] [2021-10-21 19:41:35,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163252806] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:35,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:35,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:41:35,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748101563] [2021-10-21 19:41:35,135 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:41:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:35,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 1 times [2021-10-21 19:41:35,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:35,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342072618] [2021-10-21 19:41:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:35,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:35,165 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:35,187 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:35,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:41:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:41:35,271 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:35,313 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2021-10-21 19:41:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:41:35,314 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-10-21 19:41:35,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:35,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 19 transitions. [2021-10-21 19:41:35,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-21 19:41:35,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-21 19:41:35,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-10-21 19:41:35,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:41:35,321 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-10-21 19:41:35,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-10-21 19:41:35,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2021-10-21 19:41:35,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 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) [2021-10-21 19:41:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-10-21 19:41:35,322 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-10-21 19:41:35,322 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-10-21 19:41:35,322 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:41:35,322 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-10-21 19:41:35,323 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:35,323 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:41:35,323 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:41:35,323 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:35,323 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:41:35,324 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 147#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 154#L367 assume !(main_~length~0 < 1); 148#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 149#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 150#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 155#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 157#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 156#L370-3 assume !(main_~i~0 < main_~length~0); 151#L370-4 main_~j~0 := 0; 152#L378-2 [2021-10-21 19:41:35,324 INFO L793 eck$LassoCheckResult]: Loop: 152#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 153#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 152#L378-2 [2021-10-21 19:41:35,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:35,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2021-10-21 19:41:35,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:35,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895854964] [2021-10-21 19:41:35,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:35,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:35,344 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:35,364 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:35,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:35,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 2 times [2021-10-21 19:41:35,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:35,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647788374] [2021-10-21 19:41:35,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:35,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:35,374 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:35,382 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:35,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:35,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1719996831, now seen corresponding path program 1 times [2021-10-21 19:41:35,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:35,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258968443] [2021-10-21 19:41:35,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:35,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:35,416 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:35,446 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:35,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-10-21 19:41:35,823 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:41:35,824 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:41:35,824 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:41:35,824 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:41:35,824 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:41:35,824 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:35,824 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:41:35,825 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:41:35,825 INFO L133 ssoRankerPreferences]: Filename of dumped script: array16_alloca_original.i_Iteration3_Lasso [2021-10-21 19:41:35,825 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:41:35,825 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:41:35,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:35,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:36,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:36,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:36,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:36,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:36,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:36,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:36,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:36,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:36,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:36,449 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:41:36,449 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:41:36,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:36,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:36,452 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:36,458 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 [2021-10-21 19:41:36,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:36,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:36,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:36,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:36,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:36,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:36,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:36,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 19:41:36,483 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:36,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:36,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:36,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:36,520 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:36,528 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 [2021-10-21 19:41:36,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:36,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:36,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:36,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:36,541 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:41:36,542 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:41:36,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 19:41:36,563 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:36,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:36,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:36,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:36,598 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:36,604 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 [2021-10-21 19:41:36,614 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:36,614 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:36,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:36,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:36,623 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:41:36,624 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:41:36,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 19:41:36,651 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:41:36,680 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2021-10-21 19:41:36,680 INFO L444 ModelExtractionUtils]: 2 out of 25 variables were initially zero. Simplification set additionally 20 variables to zero. [2021-10-21 19:41:36,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:36,681 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:36,687 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:41:36,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 19:41:36,716 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-21 19:41:36,716 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:41:36,716 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2021-10-21 19:41:36,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:36,760 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-10-21 19:41:36,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:36,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:41:36,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:36,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:41:36,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:36,841 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 [2021-10-21 19:41:36,841 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:36,853 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 22 transitions. Complement of second has 5 states. [2021-10-21 19:41:36,854 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 [2021-10-21 19:41:36,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2021-10-21 19:41:36,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2021-10-21 19:41:36,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:41:36,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2021-10-21 19:41:36,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:41:36,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2021-10-21 19:41:36,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:41:36,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2021-10-21 19:41:36,857 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:36,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 22 transitions. [2021-10-21 19:41:36,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-21 19:41:36,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-21 19:41:36,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2021-10-21 19:41:36,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:41:36,859 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-10-21 19:41:36,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2021-10-21 19:41:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-21 19:41:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-10-21 19:41:36,861 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-10-21 19:41:36,861 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-10-21 19:41:36,861 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:41:36,861 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2021-10-21 19:41:36,862 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:36,862 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:41:36,862 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:41:36,863 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:36,863 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:41:36,863 INFO L791 eck$LassoCheckResult]: Stem: 243#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 244#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 254#L367 assume !(main_~length~0 < 1); 245#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 246#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 247#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 255#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 257#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 256#L370-3 assume !(main_~i~0 < main_~length~0); 248#L370-4 main_~j~0 := 0; 249#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 250#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 251#L378-2 [2021-10-21 19:41:36,864 INFO L793 eck$LassoCheckResult]: Loop: 251#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 258#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 251#L378-2 [2021-10-21 19:41:36,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:36,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1719996833, now seen corresponding path program 1 times [2021-10-21 19:41:36,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:36,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112269046] [2021-10-21 19:41:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:36,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:36,890 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:36,920 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:36,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:36,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 3 times [2021-10-21 19:41:36,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:36,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669643187] [2021-10-21 19:41:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:36,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:36,928 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:36,935 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:36,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:36,935 INFO L82 PathProgramCache]: Analyzing trace with hash -645451100, now seen corresponding path program 1 times [2021-10-21 19:41:36,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:36,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648727421] [2021-10-21 19:41:36,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:36,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:41:36,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:36,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648727421] [2021-10-21 19:41:36,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648727421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:41:36,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611228855] [2021-10-21 19:41:36,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:36,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:36,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:36,978 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:41:37,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-21 19:41:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:37,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:41:37,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:41:37,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611228855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:37,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:41:37,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-10-21 19:41:37,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432084064] [2021-10-21 19:41:37,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:37,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:41:37,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:41:37,136 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-21 19:41:37,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:37,159 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2021-10-21 19:41:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:41:37,159 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 24 transitions. [2021-10-21 19:41:37,161 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:37,162 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 22 transitions. [2021-10-21 19:41:37,162 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-21 19:41:37,162 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-21 19:41:37,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2021-10-21 19:41:37,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:41:37,162 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-10-21 19:41:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2021-10-21 19:41:37,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-21 19:41:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-10-21 19:41:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2021-10-21 19:41:37,166 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-10-21 19:41:37,166 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-10-21 19:41:37,166 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:41:37,167 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2021-10-21 19:41:37,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:37,168 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:41:37,168 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:41:37,170 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:37,170 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:41:37,170 INFO L791 eck$LassoCheckResult]: Stem: 327#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 328#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 338#L367 assume !(main_~length~0 < 1); 329#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 330#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 331#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 339#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 342#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 340#L370-3 assume !(main_~i~0 < main_~length~0); 336#L370-4 main_~j~0 := 0; 337#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 334#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 335#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 332#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 333#L378-2 [2021-10-21 19:41:37,171 INFO L793 eck$LassoCheckResult]: Loop: 333#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 341#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 333#L378-2 [2021-10-21 19:41:37,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:37,171 INFO L82 PathProgramCache]: Analyzing trace with hash -645453020, now seen corresponding path program 2 times [2021-10-21 19:41:37,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:37,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716349028] [2021-10-21 19:41:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:37,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:37,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:37,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716349028] [2021-10-21 19:41:37,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716349028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:41:37,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848547985] [2021-10-21 19:41:37,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:41:37,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:37,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:37,289 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:41:37,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-21 19:41:37,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:41:37,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:41:37,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:41:37,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:37,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848547985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:41:37,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:41:37,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-21 19:41:37,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088501153] [2021-10-21 19:41:37,438 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:41:37,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:37,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 4 times [2021-10-21 19:41:37,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:37,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968150112] [2021-10-21 19:41:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:37,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:37,451 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:37,473 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:37,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:37,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:41:37,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:41:37,527 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:37,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-10-21 19:41:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:37,666 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-10-21 19:41:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:41:37,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2021-10-21 19:41:37,668 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:37,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 21 states and 27 transitions. [2021-10-21 19:41:37,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-21 19:41:37,669 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-21 19:41:37,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2021-10-21 19:41:37,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:41:37,669 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-10-21 19:41:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2021-10-21 19:41:37,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-10-21 19:41:37,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 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) [2021-10-21 19:41:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-10-21 19:41:37,671 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-21 19:41:37,671 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-21 19:41:37,671 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:41:37,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 24 transitions. [2021-10-21 19:41:37,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:37,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:41:37,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:41:37,673 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:37,673 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:41:37,673 INFO L791 eck$LassoCheckResult]: Stem: 438#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 439#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 449#L367 assume !(main_~length~0 < 1); 440#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 441#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 442#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 450#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 455#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 451#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 452#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 453#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 456#L370-3 assume !(main_~i~0 < main_~length~0); 443#L370-4 main_~j~0 := 0; 444#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 447#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 448#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 445#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 446#L378-2 [2021-10-21 19:41:37,673 INFO L793 eck$LassoCheckResult]: Loop: 446#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 454#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 446#L378-2 [2021-10-21 19:41:37,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:37,674 INFO L82 PathProgramCache]: Analyzing trace with hash -685994466, now seen corresponding path program 3 times [2021-10-21 19:41:37,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:37,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154108708] [2021-10-21 19:41:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:37,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:37,714 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:37,741 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:37,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 5 times [2021-10-21 19:41:37,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:37,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170739738] [2021-10-21 19:41:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:37,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:37,747 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:37,751 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:37,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:37,752 INFO L82 PathProgramCache]: Analyzing trace with hash -2110684191, now seen corresponding path program 4 times [2021-10-21 19:41:37,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:37,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700260892] [2021-10-21 19:41:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:37,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:37,781 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:37,824 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:38,392 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:41:38,392 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:41:38,392 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:41:38,392 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:41:38,393 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:41:38,393 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:38,393 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:41:38,393 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:41:38,393 INFO L133 ssoRankerPreferences]: Filename of dumped script: array16_alloca_original.i_Iteration6_Lasso [2021-10-21 19:41:38,393 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:41:38,393 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:41:38,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:41:38,865 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:41:38,865 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:41:38,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:38,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:38,867 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:38,872 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 [2021-10-21 19:41:38,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:38,881 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:38,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:38,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:38,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:38,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:38,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:38,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 19:41:38,899 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:38,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:38,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:38,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:38,936 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:38,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 19:41:38,942 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 [2021-10-21 19:41:38,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:38,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:38,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:38,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:38,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:38,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:38,950 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:38,950 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:38,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:38,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:38,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:38,973 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:38,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 19:41:38,977 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 [2021-10-21 19:41:38,984 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:38,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:38,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:38,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:38,987 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:41:38,987 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:41:39,027 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:39,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:39,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:39,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:39,057 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:39,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-21 19:41:39,061 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 [2021-10-21 19:41:39,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:39,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:39,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:39,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:39,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:39,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:39,070 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:39,070 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:39,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:39,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:39,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:39,095 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:39,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-21 19:41:39,105 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 [2021-10-21 19:41:39,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:39,112 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:39,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:39,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:39,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:39,112 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:39,112 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:39,123 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:39,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:39,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:39,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:39,154 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:39,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-21 19:41:39,155 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 [2021-10-21 19:41:39,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:39,162 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:41:39,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:39,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:39,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:39,162 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:41:39,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:41:39,165 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:39,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:39,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:39,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:39,189 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:39,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-21 19:41:39,190 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 [2021-10-21 19:41:39,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:39,197 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:39,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:39,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:39,199 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:41:39,199 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:41:39,201 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:41:39,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-10-21 19:41:39,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:39,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:39,222 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:39,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-21 19:41:39,223 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 [2021-10-21 19:41:39,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:41:39,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:41:39,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:41:39,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:41:39,237 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:41:39,238 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:41:39,255 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:41:39,297 INFO L443 ModelExtractionUtils]: Simplification made 17 calls to the SMT solver. [2021-10-21 19:41:39,297 INFO L444 ModelExtractionUtils]: 4 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. [2021-10-21 19:41:39,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:41:39,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:39,304 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:39,307 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:41:39,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-21 19:41:39,315 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-21 19:41:39,315 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:41:39,315 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_3) = -8*ULTIMATE.start_main_~j~0 + 3*v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_3 Supporting invariants [-1*ULTIMATE.start_main_~length~0 + 2 >= 0] [2021-10-21 19:41:39,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-21 19:41:39,354 INFO L297 tatePredicateManager]: 3 out of 5 supporting invariants were superfluous and have been removed [2021-10-21 19:41:39,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:39,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:41:39,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:39,630 WARN L261 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:41:39,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:39,668 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.6 stem predicates 2 loop predicates [2021-10-21 19:41:39,669 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 24 transitions. cyclomatic complexity: 8 Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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) [2021-10-21 19:41:39,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:39,824 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 24 transitions. cyclomatic complexity: 8. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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) Result 35 states and 47 transitions. Complement of second has 11 states. [2021-10-21 19:41:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 6 stem states 1 non-accepting loop states 2 accepting loop states [2021-10-21 19:41:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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) [2021-10-21 19:41:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 33 transitions. [2021-10-21 19:41:39,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 33 transitions. Stem has 17 letters. Loop has 2 letters. [2021-10-21 19:41:39,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:41:39,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 33 transitions. Stem has 19 letters. Loop has 2 letters. [2021-10-21 19:41:39,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:41:39,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 33 transitions. Stem has 17 letters. Loop has 4 letters. [2021-10-21 19:41:39,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:41:39,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2021-10-21 19:41:39,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:39,830 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 47 transitions. [2021-10-21 19:41:39,830 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-21 19:41:39,830 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-10-21 19:41:39,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 47 transitions. [2021-10-21 19:41:39,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:41:39,831 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 47 transitions. [2021-10-21 19:41:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 47 transitions. [2021-10-21 19:41:39,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2021-10-21 19:41:39,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 27 states have internal predecessors, (37), 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) [2021-10-21 19:41:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2021-10-21 19:41:39,835 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-10-21 19:41:39,835 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-10-21 19:41:39,835 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 19:41:39,835 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 37 transitions. [2021-10-21 19:41:39,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:41:39,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:41:39,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:41:39,837 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:39,837 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:41:39,837 INFO L791 eck$LassoCheckResult]: Stem: 615#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 616#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 626#L367 assume !(main_~length~0 < 1); 617#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 618#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 619#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 627#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 636#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 628#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 629#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 633#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 634#L370-3 assume !(main_~i~0 < main_~length~0); 635#L370-4 main_~j~0 := 0; 641#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 640#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 639#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 637#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 638#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 622#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 623#L378-2 [2021-10-21 19:41:39,837 INFO L793 eck$LassoCheckResult]: Loop: 623#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 632#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 623#L378-2 [2021-10-21 19:41:39,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:39,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2110684189, now seen corresponding path program 5 times [2021-10-21 19:41:39,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:39,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538322590] [2021-10-21 19:41:39,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:39,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:40,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:40,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538322590] [2021-10-21 19:41:40,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538322590] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:41:40,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008928066] [2021-10-21 19:41:40,181 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:41:40,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:40,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:40,184 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:41:40,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-21 19:41:40,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-21 19:41:40,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:41:40,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:41:40,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:40,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-10-21 19:41:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-21 19:41:40,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008928066] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:41:40,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:41:40,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2021-10-21 19:41:40,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688867063] [2021-10-21 19:41:40,532 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:41:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:40,533 INFO L82 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 6 times [2021-10-21 19:41:40,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:40,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835726935] [2021-10-21 19:41:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:40,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:40,546 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:40,550 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:40,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:41:40,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:41:40,618 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. cyclomatic complexity: 13 Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 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) [2021-10-21 19:41:40,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:40,763 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2021-10-21 19:41:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:41:40,764 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2021-10-21 19:41:40,764 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-21 19:41:40,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 42 states and 54 transitions. [2021-10-21 19:41:40,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-21 19:41:40,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-10-21 19:41:40,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 54 transitions. [2021-10-21 19:41:40,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:41:40,766 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 54 transitions. [2021-10-21 19:41:40,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 54 transitions. [2021-10-21 19:41:40,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2021-10-21 19:41:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 37 states have internal predecessors, (50), 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) [2021-10-21 19:41:40,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2021-10-21 19:41:40,769 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 50 transitions. [2021-10-21 19:41:40,769 INFO L587 BuchiCegarLoop]: Abstraction has 38 states and 50 transitions. [2021-10-21 19:41:40,770 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-21 19:41:40,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 50 transitions. [2021-10-21 19:41:40,770 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-21 19:41:40,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:41:40,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:41:40,771 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:40,771 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-10-21 19:41:40,771 INFO L791 eck$LassoCheckResult]: Stem: 761#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 762#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 771#L367 assume !(main_~length~0 < 1); 763#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 764#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 765#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 772#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 783#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 773#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 774#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 775#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 780#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 782#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 778#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 779#L370-3 assume !(main_~i~0 < main_~length~0); 766#L370-4 main_~j~0 := 0; 767#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 797#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 795#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 790#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 788#L378-2 [2021-10-21 19:41:40,771 INFO L793 eck$LassoCheckResult]: Loop: 788#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 784#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 785#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 789#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 788#L378-2 [2021-10-21 19:41:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:40,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1570402076, now seen corresponding path program 6 times [2021-10-21 19:41:40,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:40,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092909381] [2021-10-21 19:41:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:40,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:40,800 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:40,827 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:40,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:40,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2219337, now seen corresponding path program 1 times [2021-10-21 19:41:40,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:40,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392411253] [2021-10-21 19:41:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:40,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:40,834 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:40,840 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:40,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:40,841 INFO L82 PathProgramCache]: Analyzing trace with hash -507624276, now seen corresponding path program 7 times [2021-10-21 19:41:40,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:40,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64149981] [2021-10-21 19:41:40,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:40,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:40,887 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:40,940 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:41:41,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:41:41 BoogieIcfgContainer [2021-10-21 19:41:41,898 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:41:41,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:41:41,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:41:41,899 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:41:41,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:32" (3/4) ... [2021-10-21 19:41:41,903 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:41:41,951 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a93858-c19a-43f0-84ab-47a17af34d03/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:41:41,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:41:41,952 INFO L168 Benchmark]: Toolchain (without parser) took 9915.89 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 74.7 MB in the beginning and 83.9 MB in the end (delta: -9.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:41,953 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:41:41,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.24 ms. Allocated memory is still 104.9 MB. Free memory was 74.5 MB in the beginning and 58.0 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:41,953 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.17 ms. Allocated memory is still 104.9 MB. Free memory was 57.8 MB in the beginning and 56.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:41,954 INFO L168 Benchmark]: Boogie Preprocessor took 21.76 ms. Allocated memory is still 104.9 MB. Free memory was 56.2 MB in the beginning and 55.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:41,954 INFO L168 Benchmark]: RCFGBuilder took 323.91 ms. Allocated memory is still 104.9 MB. Free memory was 55.0 MB in the beginning and 45.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:41,954 INFO L168 Benchmark]: BuchiAutomizer took 9061.58 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 45.0 MB in the beginning and 85.9 MB in the end (delta: -40.9 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:41,955 INFO L168 Benchmark]: Witness Printer took 52.00 ms. Allocated memory is still 127.9 MB. Free memory was 85.9 MB in the beginning and 83.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:41,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 408.24 ms. Allocated memory is still 104.9 MB. Free memory was 74.5 MB in the beginning and 58.0 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.17 ms. Allocated memory is still 104.9 MB. Free memory was 57.8 MB in the beginning and 56.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.76 ms. Allocated memory is still 104.9 MB. Free memory was 56.2 MB in the beginning and 55.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 323.91 ms. Allocated memory is still 104.9 MB. Free memory was 55.0 MB in the beginning and 45.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9061.58 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 45.0 MB in the beginning and 85.9 MB in the end (delta: -40.9 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. * Witness Printer took 52.00 ms. Allocated memory is still 127.9 MB. Free memory was 85.9 MB in the beginning and 83.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (4 trivial, 3 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function length + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * j + length and consists of 3 locations. One deterministic module has affine ranking function -8 * j + 3 * unknown-#length-unknown[__builtin_alloca(length*sizeof(int))] and consists of 9 locations. 4 modules have a trivial ranking function, the largest among these consists of 16 locations. The remainder module has 38 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.0s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 7.7s. Construction of modules took 0.3s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 27.5ms AutomataMinimizationTime, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 38 states and ocurred in iteration 7. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 120 SDslu, 104 SDs, 0 SdLazy, 282 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 300.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU3 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital146 mio100 ax100 hnf99 lsp92 ukn91 mio100 lsp53 div147 bol100 ite100 ukn100 eq155 hnf70 smp93 dnf103 smp98 tf100 neg99 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 377]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, \result=0, NULL=1, arr=2, arr=0, i=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29ba3edd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59943f9c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@484e29e6=0, length=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@2fc9dabe=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@484e29e6=2, j=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@258ee66c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@17cd7d3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6acfb71d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@622bc699=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 377]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i